Gaya APA

Alexander, L., Ferguson, P. (1980). Question and answer: graded oral comprehension exercises / L.G.Alexander (NewEd.1t1on). Yogyakarta: Kanisius.

Gaya MLA

Alexander, L.G.., Ferguson, Peter. "Question and answer: graded oral comprehension exercises / L.G.Alexander". NewEd.1t1on Yogyakarta: Kanisius, 1980. Text.