APA ציטוט

National Science Board (U.S.). (1998). Science and engineering indicators. U.S. G.P.O.

Chicago Style (17th ed.) Citation

National Science Board (U.S.). Science and Engineering Indicators. Washington, D.C: U.S. G.P.O, 1998.

ציטוט MLA

National Science Board (U.S.). Science and Engineering Indicators. U.S. G.P.O, 1998.