Cita APA (7a ed.)

Wilson, A. (1972). The marketing of professional services. McGraw-Hill.

Cita Chicago Style (17a ed.)

Wilson, Aubrey. The Marketing of Professional Services. London, New York: McGraw-Hill, 1972.

Cita MLA (9a ed.)

Wilson, Aubrey. The Marketing of Professional Services. McGraw-Hill, 1972.