Cita APA

Sparling, K., & Earls, G. (1992). How to evaluate and improve your marketing department. Lincolnwood, Ill.: NTC Business Books.

Citación estilo Chicago

Sparling, Keith, y Gerard Earls. How to Evaluate and Improve Your Marketing Department. Lincolnwood, Ill.: NTC Business Books, 1992.

Cita MLA

Sparling, Keith, y Gerard Earls. How to Evaluate and Improve Your Marketing Department. Lincolnwood, Ill.: NTC Business Books, 1992.