Citazione Stile APA (7a Edizione)

Hart, N. A., & Humphrey, G. (1990). The Professional adviser's guide to marketing. Mercury Books.

Citazione stile Chigago Style (17a edizione)

Hart, Norman A., e Geoff Humphrey. The Professional Adviser's Guide to Marketing. London: Mercury Books, 1990.

Citatione MLA (8a ed.)

Hart, Norman A., e Geoff Humphrey. The Professional Adviser's Guide to Marketing. Mercury Books, 1990.