Παραπομπή APA

Frain, J. (1981). Introduction to marketing. Macdonald and evans.

Παραπομπή Chicago Style

Frain, John. Introduction to Marketing. Estover: Macdonald and evans, 1981.

Παραπομπή MLA

Frain, John. Introduction to Marketing. Macdonald and evans, 1981.