Scholarly or professional literature is a world that consists of many types of publications. They are commonly found in an index and database search, and used as references cited in a research publication. See below for examples and explanations.
Professional literature falls under 3 categories:
|Definitions||Attributes||Types of Publications||Examples|
|Primary Literature||Direct documentation or interaction with an event or occurrence.||
Results of original research;
||Beer, K., Kolbe, E., Kahana, N.B., Yayon, N., Weiss, R., Menegazzi, P., Bloch, G., & Helfrich-Forster (2018). Pigment-Dispersing Factor-expressing neurons convey circadian information in the honey bee brain. Open Biology, 8(1). DOI: 10.1098/rsob.170224|
|Secondary Literature||Based on an indirect interaction with an event or information.||Summarizes, uses, discusses, or comments on information from primary sources.||
||Lane, D. M., Scott, D., Hebl, M., Guerra, R., Osherson, & Zimmer, H. (n. d.). Introduction to statistics [eBook edition]. Rice University. https://open.umn.edu/opentextbooks/textbooks/introduction-to-statistics|
|Tertiary Literature||Also indirect interaction with an event or information.||Utilizes and distills information from both primary and secondary sources.||
||National Institute of Standards and Technology (2018). NIST chemistry webbook. https://webbook.nist.gov/chemistry/|
A reference work is a collection of general facts within a field. These can be used to find standards, measurements, or the general background of a theory. Many types of reference works exist, but these are ones more commonly used in the sciences.
International Standard Organization (n.d). Standards. https://www.iso.org/standards.html
Certain scientific fields communicate their findings using other types of publications:
Gray (or grey) literature generally consists of publications that are not distributed through scholarly or commercial channels such as professional journals. Types of gray literature may include:
Some definitions of gray literature include publications such as blogs, statistical reports, and working papers.
The purpose of gray literature varies and depends on the setting in which it is published and distributed. In corporations or organizations, gray literature may be used to distribute new information, communicate for internal purposes, or to document activities. One example is State Licensed Substance Abuse Treatment Programs in Philadelphia, a report of The Pew Charitable Trust's study on medical-assisted treatment (MAT) and opioid-related deaths. For academic contexts, gray literature may be a forum for presenting ideas that may be emerging or do not yet have wide interest.
Gray literature should be considered in any literature review in order have a broader view of what is discussed and researched on a particular topic.
The following document types are often retrieved in a database search. These are generally known as "front material." Although they do not communicate original research or generate new knowledge, their role is to provide an arena for commentary and discussion within a field: