Gaya APA
O\'neill, R.
(1990).
A.K.L. Beginning Student's . Book 1 dan 2;
.
Jakarta:
Pustaka Jaya.
Gaya MLA
O\'neill, Robert.
"A.K.L. Beginning Student's . Book 1 dan 2;".
Jakarta:
Pustaka Jaya,
1990.
Text.