Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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