Gaya APA

Pratley, P., Prasetio, G. (1997). The essence of business ethics Etika bisnis (1997). : Yogyakarta : Andi.,.

Gaya MLA

Pratley, Peter., Prasetio, Gunawan. "The essence of business ethics Etika bisnis". 1997 : Yogyakarta : Andi.,, 1997. Text.