Crandall, R. (1996). Marketing your services: For people who hate to sell. Contemporary Books.
Cita Chicago (17th ed.)Crandall, Rick. Marketing Your Services: For People Who Hate to Sell. Chicago: Contemporary Books, 1996.
Cita MLA (9th ed.)Crandall, Rick. Marketing Your Services: For People Who Hate to Sell. Contemporary Books, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.