Marcus, B. W. (1986). Competing for clients: [the complete guide to marketing & promoting professional services] (2. print.). Probus Publ. Co.
Chicago-Zitierstil (17. Ausg.)Marcus, Bruce W. Competing for Clients: [the Complete Guide to Marketing & Promoting Professional Services]. 2. print. Chicago, Ill: Probus Publ. Co, 1986.
MLA-Zitierstil (9. Ausg.)Marcus, Bruce W. Competing for Clients: [the Complete Guide to Marketing & Promoting Professional Services]. 2. print. Probus Publ. Co, 1986.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.