Karstein, H. (1968). New horizons in marketing. Thacker and Company.
Chicago Style aipamenaKarstein, H. New Horizons in Marketing. Bombay: Thacker and Company, 1968.
MLA aipamenaKarstein, H. New Horizons in Marketing. Thacker and Company, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.