Gaya APA
Alexander, L. (1995).
Question and Answer: Graded Oral Comprehension Exercises (Edisi 11).
Yogyakarta:
Penerbit Kanisius.
Gaya MLA
Alexander, L.G..
"Question and Answer: Graded Oral Comprehension Exercises".
Edisi 11
Yogyakarta:
Penerbit Kanisius,
1995.
Text.