Gaya APA

Hutt, M, D., Speh, T, W. (2013). Business marketing management b2b 11-th ed (ED-11). South Western: South- Western : Cengage, 2013.

Gaya MLA

Hutt, Michael, D.., Speh, Thomas, W.. "Business marketing management b2b 11-th ed". ED-11 South Western: South- Western : Cengage, 2013, 2013. Text.