Παραπομπή APA

Karstein, H. (1968). New horizons in marketing. Thacker and Company.

Παραπομπή Chicago Style

Karstein, H. New Horizons in Marketing. Bombay: Thacker and Company, 1968.

Παραπομπή MLA

Karstein, H. New Horizons in Marketing. Thacker and Company, 1968.