Gaya APA

Ribbers, M, P, P, R, P, M, A. (2006). E-Business . : John Wiley & Sons Incorporated.

Gaya MLA

Ribbers, M., Papazoglou;, Pieter, Ribbers;, Pieter, M., A.. "E-Business". : John Wiley & Sons Incorporated, 2006. Text.