Cita APA

Learned, E. P. 1., & Learned, E. P. 1. (1936). Problems in marketing. New York, New York: McGraw-Hill.

Citación estilo Chicago

Learned, Edmund Philip 1900-1991, y Edmund Philip 1900-1991 Learned. Problems in Marketing. New York, New York: McGraw-Hill, 1936.

Cita MLA

Learned, Edmund Philip 1900-1991, y Edmund Philip 1900-1991 Learned. Problems in Marketing. New York, New York: McGraw-Hill, 1936.