Lua APA (7ú heag.)

Heimler, C. H., & Neal, C. D. (1979). Principles of science (4th ed.). C.E. Merrill Pub. Co..

Lua i Stíl Chicago (17ú heag.)

Heimler, Charles H., agus Charles D. Neal. Principles of Science. 4th ed. Columbus, Ohio: C.E. Merrill Pub. Co., 1979.

Lua MLA (8ú heag.)

Heimler, Charles H., agus Charles D. Neal. Principles of Science. 4th ed. C.E. Merrill Pub. Co., 1979.

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