Παραπομπή APA

Kjer-Hansen, M. (1965). Cost problems in modern marketing. Einar Harcks Forlag.

Παραπομπή Chicago Style

Kjer-Hansen, Max. Cost Problems in Modern Marketing. Kobenhavn: Einar Harcks Forlag, 1965.

Παραπομπή MLA

Kjer-Hansen, Max. Cost Problems in Modern Marketing. Einar Harcks Forlag, 1965.