APA (7th ed.) Citation

Holtje, H. (1981). Schaum's outline of theory and problems of marketing. McGraw-Hill.

Chicago Style (17th ed.) Citation

Holtje, Herbert. Schaum's Outline of Theory and Problems of Marketing. New York: McGraw-Hill, 1981.

MLA (9th ed.) Citation

Holtje, Herbert. Schaum's Outline of Theory and Problems of Marketing. McGraw-Hill, 1981.