Παραπομπή APA

Sewell, J. (1966). Marketing and market assessment. Routledge and Kegan Paul.

Παραπομπή Chicago Style

Sewell, J.L. Marketing and Market Assessment. London: Routledge and Kegan Paul, 1966.

Παραπομπή MLA

Sewell, J.L. Marketing and Market Assessment. Routledge and Kegan Paul, 1966.