APA-referens (7:e uppl.)
National Research Council (U.S.), National Science Foundation (U.S.). Division of Science Resources Studies, ebrary, Inc, Brown, P., & Henderson, P. (1998). Doctoral scientists and engineers in the United States: 1995 profile. National Science Foundation.
Chicago-referens (17:e uppl.)
National Research Council (U.S.), National Science Foundation (U.S.). Division of Science Resources Studies, Inc ebrary, Prudence Brown, och Peter Henderson. Doctoral Scientists and Engineers in the United States: 1995 Profile. Arlington, VA: National Science Foundation, 1998.
MLA-referens (9:e uppl.)
National Research Council (U.S.), et al. Doctoral Scientists and Engineers in the United States: 1995 Profile. National Science Foundation, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.