APA (7th ed.) Citation

Sinkel, D. (1984). Computers in purchasing. AMA Membership Publications Division, American Management Associations.

Chicago Style (17th ed.) Citation

Sinkel, Dimitri. Computers in Purchasing. New York: AMA Membership Publications Division, American Management Associations, 1984.

MLA (9th ed.) Citation

Sinkel, Dimitri. Computers in Purchasing. AMA Membership Publications Division, American Management Associations, 1984.