Gaya APA
W.Davis, E, J.
(1991).
Adult Learners English with Answer 1 / John W Davis (editor)
.
Jakarta:
Binarupa.
Gaya MLA
W.Davis, Editor:, John.
"Adult Learners English with Answer 1 / John W Davis (editor)".
Jakarta:
Binarupa,
1991.
Text.