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.