Gaya APA
Kurnianingrat, ., Rudolph, H. (1980).
Pratical conversations : La guide to english use .
Jakarta:
Bhatara Karya Aksara.
Gaya MLA
Kurnianingrat, ., Rudolph, Harumani.
"Pratical conversations : La guide to english use".
Jakarta:
Bhatara Karya Aksara,
1980.
Text.