Cita APA (7th ed.)

Beckman, T. N., & Davidson, W. R. (1967). Marketing (8th ed.). Ronald Press.

Cita Chicago (17th ed.)

Beckman, Theodore N., i William R. Davidson. Marketing. 8th ed. New York: Ronald Press, 1967.

Cita MLA (9th ed.)

Beckman, Theodore N., i William R. Davidson. Marketing. 8th ed. Ronald Press, 1967.