APA aipamena

Schaffir, K. H., & George, T. H. (1973). Marketing information systems. American management association.

Chicago Style aipamena

Schaffir, Kurt H., and Trentin H. George. Marketing Information Systems. USA: American management association, 1973.

MLA aipamena

Schaffir, Kurt H., and Trentin H. George. Marketing Information Systems. American management association, 1973.