Cita APA

Kelly, J. M. (1987). How to check out your competition: A complete plan for innvestigating your market. New York [etc.]: John Wiley & sons.

Citación estilo Chicago

Kelly, John M. How to Check Out Your Competition: A Complete Plan for Innvestigating Your Market. New York [etc.]: John Wiley & sons, 1987.

Cita MLA

Kelly, John M. How to Check Out Your Competition: A Complete Plan for Innvestigating Your Market. New York [etc.]: John Wiley & sons, 1987.