Gaya APA

ALEXANDER, L. (2006). QUESTION AND ANSWER : Graded Oral Comprehension Exercises / L G Alexander (Cet.ke-21). Yogyakarta: Kanisius.

Gaya MLA

ALEXANDER, L.G.. "QUESTION AND ANSWER : Graded Oral Comprehension Exercises / L G Alexander". Cet.ke-21 Yogyakarta: Kanisius, 2006. Text.