Παραπομπή APA

Stevens, R. E. .. a. (2000). The marketing research guide. Viva books.

Παραπομπή Chicago Style

Stevens, Robert E. ...[et al]. The Marketing Research Guide. New Delhi: Viva books, 2000.

Παραπομπή MLA

Stevens, Robert E. ...[et al]. The Marketing Research Guide. Viva books, 2000.