Παραπομπή APA
(1977). McGraw-Hill encyclopedia of science and technology: An international reference work in fifteen volumes including an index ([4th ed.].). New York: McGraw-Hill.
Παραπομπή Chicago StyleMcGraw-Hill Encyclopedia of Science and Technology: An International Reference Work in Fifteen Volumes Including an Index. [4th ed.]. New York: McGraw-Hill, 1977.
Παραπομπή MLAMcGraw-Hill Encyclopedia of Science and Technology: An International Reference Work in Fifteen Volumes Including an Index. [4th ed.]. New York: McGraw-Hill, 1977.
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