Gaya APA
OPDYCKE, JOHN B. (1987).
Harpers English grammar .
New York:
Warner Books.
Gaya Chicago
OPDYCKE, JOHN B.
Harpers English grammar.
New York:
Warner Books,
1987.
Buku.
Gaya MLA
OPDYCKE, JOHN B.
Harpers English grammar.
New York:
Warner Books,
1987.
Buku.
Gaya Turabian
OPDYCKE, JOHN B.
Harpers English grammar.
New York:
Warner Books,
1987.
Buku.