Gaya APA

Machfoedz, M., , . (1997). English for students of business the new performance . Yogyakarta: Yogyakarta: UPP AMP YKPN, 1997.

Gaya MLA

Machfoedz, Mahmud., , . "English for students of business the new performance". Yogyakarta: Yogyakarta: UPP AMP YKPN, 1997, 1997. .