National Research Council (U.S.), National Science Foundation (U.S.). Division of Science Resources Studies, Brown, P., & Henderson, P. (1998). Doctoral scientists and engineers in the United States: 1995 profile. National Science Foundation.
Citace podle Chicago (17th ed.)National Research Council (U.S.), National Science Foundation (U.S.). Division of Science Resources Studies, Prudence Brown, a Peter Henderson. Doctoral Scientists and Engineers in the United States: 1995 Profile. Arlington, VA: National Science Foundation, 1998.
Citace podle MLA (9th ed.)National Research Council (U.S.), et al. Doctoral Scientists and Engineers in the United States: 1995 Profile. National Science Foundation, 1998.
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