APA (7th ed.) Zitazioa
Obert, E. F. (1968). Internal combustion engines (3d ed.). International Textbook Company.
Chicago Style (17th ed.) Zitazioa
Obert, Edward F. Internal Combustion Engines. 3d ed. Scranton: International Textbook Company, 1968.
MLA (9th ed.) Zitazioa
Obert, Edward F. Internal Combustion Engines. 3d ed. International Textbook Company, 1968.
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