Παραπομπή APA

Crisp, R. D. (1961). Sales planning and control. McGraw Hill books.

Παραπομπή Chicago Style

Crisp, Richard D. Sales Planning and Control. New York: McGraw Hill books, 1961.

Παραπομπή MLA

Crisp, Richard D. Sales Planning and Control. McGraw Hill books, 1961.