APA aipamena

Holtje, H. F. (1981). Schaum's outline of theory and problems of marketing. Mc graw hill book company.

Chicago Style aipamena

Holtje, Herbert F. Schaum's Outline of Theory and Problems of Marketing. New York: Mc graw hill book company, 1981.

MLA aipamena

Holtje, Herbert F. Schaum's Outline of Theory and Problems of Marketing. Mc graw hill book company, 1981.