APA (7th ed.) Citation

(1981). Ward's directory of ... largest U.S. corporations. B. H. Ward Publications.

Chicago Style (17th ed.) Citation

Ward's Directory of ... Largest U.S. Corporations. Petaluma, Calif.: B. H. Ward Publications, 1981.

MLA (9th ed.) Citation

Ward's Directory of ... Largest U.S. Corporations. B. H. Ward Publications, 1981.

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