Gaya APA
Alexander, L.
(1980).
Question And Anwer Graded Oral Comprehension Exercises
.
Yogyakarta:
Kanisius.
Gaya MLA
Alexander, L.G..
"Question And Anwer Graded Oral Comprehension Exercises".
Yogyakarta:
Kanisius,
1980.
Buku Tex.