Gaya APA
Hadikusumo, .
(1984).
Useful Vocabs, Expressions and Idiomatic Problems
.
Yogyakarta:
Penerbit Kanisus.
Gaya MLA
Hadikusumo, .
"Useful Vocabs, Expressions and Idiomatic Problems".
Yogyakarta:
Penerbit Kanisus,
1984.
Text.