Gaya APA

Alexander, L., Ffolkes, M. (1990). Developing Skills : An Integrated Course for Intermediate Student (Thirteenth 1990). Yogyakarta: Kanisius.

Gaya MLA

Alexander, L.G.., Ffolkes, Michael. "Developing Skills : An Integrated Course for Intermediate Student". Thirteenth 1990 Yogyakarta: Kanisius, 1990. Text.