Cita APA (7a ed.)

Rackham, N. (1996). The SPIN® selling fieldbook: Practical tools, methods, exercise, and resources. McGraw-Hill.

Cita Chicago Style (17a ed.)

Rackham, Neil. The SPIN® Selling Fieldbook: Practical Tools, Methods, Exercise, and Resources. New York: McGraw-Hill, 1996.

Cita MLA (8a ed.)

Rackham, Neil. The SPIN® Selling Fieldbook: Practical Tools, Methods, Exercise, and Resources. McGraw-Hill, 1996.