APA
Ingram T. N., LaForge R. W., Avila R. A., Schwepker C. & HWilliams M. R. (2008). Professional selling : a trust-based approach. Mason, Ohio: Thomson/South-Western.
Chicago
Ingram Thomas N, LaForge Raymond W, Avila Ramon A, Schwepker Charles and HWilliams Michael R. 2008. Professional selling : a trust-based approach. Mason, Ohio: Thomson/South-Western.
Harvard
Ingram T. N., LaForge R. W., Avila R. A., Schwepker C. and HWilliams M. R. (2008). Professional selling : a trust-based approach. Mason, Ohio: Thomson/South-Western.
MLA
Ingram Thomas N, LaForge Raymond W, Avila Ramon A, Schwepker Charles and HWilliams Michael R. Professional selling : a trust-based approach. Mason, Ohio: Thomson/South-Western. 2008.
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