Gaya APA
, ., Howard...[et.al], I, W, D. (2000).
Instant lessons 3 advanced .
New York:
New York: Penguin English, 2000.
Gaya MLA
, ., Howard...[et.al], I., Williams,, Deirdre.
"Instant lessons 3 advanced".
New York:
New York: Penguin English, 2000,
2000.
.