Gaya APA
Krohn, R. (1990).
English sentence structure:the successor to English sentence patterns / Robert Krohn (Cet.1).
Jakarta:
Binarupa Aksara.
Gaya MLA
Krohn, Robert.
"English sentence structure:the successor to English sentence patterns / Robert Krohn".
Cet.1
Jakarta:
Binarupa Aksara,
1990.
Text.