APA (7th ed.) Citation

Beckman, T. N., & Bartels, R. (1955). Credits and collections in theory and practice (6th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Beckman, Theodore N., and Robert Bartels. Credits and Collections in Theory and Practice. 6th ed. New York: McGraw-Hill, 1955.

MLA (9th ed.) Citation

Beckman, Theodore N., and Robert Bartels. Credits and Collections in Theory and Practice. 6th ed. McGraw-Hill, 1955.