Gaya APA

Greenstein, M., Vasarhelyi, M. (2002). Elektronic Commerce (Second). Batam Riau: Salemba Empat.

Gaya MLA

Greenstein, Marilyn., Vasarhelyi, Miklos. "Elektronic Commerce". Second Batam Riau: Salemba Empat, 2002. Text.