APA (7th ed.) Zitazioa
Campbell, A., & Spain, P. J. (1990). Hoover's handbook: Profiles of over 500 major corporations (ed.). The reference press.
Chicago Style (17th ed.) Zitazioa
Campbell, Alta, eta Patrick J. Spain. Hoover's Handbook: Profiles of over 500 Major Corporations. ed. California: The reference press, 1990.
MLA (9th ed.) Zitazioa
Campbell, Alta, eta Patrick J. Spain. Hoover's Handbook: Profiles of over 500 Major Corporations. ed. The reference press, 1990.
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