Παραπομπή APA

Peters, R. A. (1974). ROI: Practical theory and innovative applications. AMA Com.

Παραπομπή Chicago Style

Peters, Robert A. ROI: Practical Theory and Innovative Applications. New York: AMA Com, 1974.

Παραπομπή MLA

Peters, Robert A. ROI: Practical Theory and Innovative Applications. AMA Com, 1974.