Παραπομπή APA

Weinland, R. (1959). Manual for selection and training purchasing department trainees. Industrial relations department.

Παραπομπή Chicago Style

Weinland, RD. Manual for Selection and Training Purchasing Department Trainees. New York: Industrial relations department, 1959.

Παραπομπή MLA

Weinland, RD. Manual for Selection and Training Purchasing Department Trainees. Industrial relations department, 1959.