APA (7th ed.) Zitazioa
Guth, W. D. (1985). Handbook of business strategy. Warren, gorham & lamont inc.
Chicago Style (17th ed.) Zitazioa
Guth, William D. Handbook of Business Strategy. Boston: Warren, gorham & lamont inc, 1985.
MLA (9th ed.) Zitazioa
Guth, William D. Handbook of Business Strategy. Warren, gorham & lamont inc, 1985.
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