Allen, R. Y., & Spohn, R. F. W. (1987). Selling Dynamics. McGraw-Hill.
Citación estilo ChicagoAllen, Robert Y., and Robert F Wilson Spohn. Selling Dynamics. New York: McGraw-Hill, 1987.
Cita MLAAllen, Robert Y., and Robert F Wilson Spohn. Selling Dynamics. McGraw-Hill, 1987.
Warning: These citations may not always be 100% accurate.