Gaya APA

Alexander, L. (2005). Question and Answer: Graded Oral Comprehension Exercises (Cet. 20). Yogyakarta: Penerbit Kanisius.

Gaya MLA

Alexander, L.G.. "Question and Answer: Graded Oral Comprehension Exercises". Cet. 20 Yogyakarta: Penerbit Kanisius, 2005. Text.