Gaya APA
, ., Persulessy, G, H. (1988).
Listening improvement execises for student of english as a foriegn ì languge .
Jakarta:
.
Gaya MLA
, ., Persulessy, George, Herman.
"Listening improvement execises for student of english as a foriegn ì languge".
Jakarta:
,
1988.
Text.