Gaya APA

ALEXANDER, ., Fergusun, P. (1980). Quetion and AnswerGraded oral Comprehension exercisesAlexander, Revised by Peter Ferguson (New Edition). Yogyakarta: Kanisius.

Gaya MLA

ALEXANDER, ., Fergusun, Peter. "Quetion and AnswerGraded oral Comprehension exercisesAlexander, Revised by Peter Ferguson". New Edition Yogyakarta: Kanisius, 1980. Text.