Gaya APA

m.si., D, P, S., english, T, Z. (1978). Basic marketing : a managerial approach (6th ed.). illinois: richard d. irwin.

Gaya MLA

m.si., Drs., Paskal, Sukandar.., english, Tim, Zenius. "Basic marketing : a managerial approach". 6th ed. illinois: richard d. irwin, 1978. Text.