Παραπομπή APA

Giles, G. B. (1974). Marketing (2nd ed.). English Language Book Society.

Παραπομπή Chicago Style

Giles, G B. Marketing. 2nd ed. London: English Language Book Society, 1974.

Παραπομπή MLA

Giles, G B. Marketing. 2nd ed. English Language Book Society, 1974.