Gaya APA
Steinberg, M, T.
(1994).
Answer Key to Robert Krohn`s English Sentence Structure
.
Jakarta:
Binarupa Aksara.
Gaya MLA
Steinberg, Miho, Tanaka.
"Answer Key to Robert Krohn`s English Sentence Structure".
Jakarta:
Binarupa Aksara,
1994.
Text.