Cita APA (7a ed.)

Dunkman, W. E. (1933). Qualittive credit control. Columbia University.

Cita Chicago Style (17a ed.)

Dunkman, Wiiliam E. Qualittive Credit Control. New York: Columbia University, 1933.

Cita MLA (8a ed.)

Dunkman, Wiiliam E. Qualittive Credit Control. Columbia University, 1933.