APA način citiranja

Kerr, J. R., & Littlefield, J. E. Marketing: An Environemental Approach.

Čikaški stil citiranja

Kerr, John R., i James E. Littlefield. Marketing: An Environemental Approach. :.

MLA način citiranja

Kerr, John R., i James E. Littlefield. Marketing: An Environemental Approach.