APA (7th ed.) Citation

Volkell, R. Z. (1981). GMAT Graduate management admission test: A Test preparation guide. John Willey r Sons.

Chicago Style (17th ed.) Citation

Volkell, Randolph Z. GMAT Graduate Management Admission Test: A Test Preparation Guide. John Willey r Sons, 1981.

MLA (8th ed.) Citation

Volkell, Randolph Z. GMAT Graduate Management Admission Test: A Test Preparation Guide. John Willey r Sons, 1981.

Warning: These citations may not always be 100% accurate.