Gaya APA
WILLIS, H. (1964).
STRUCTURE, STYLE, AND USAGE: A GUIDE TO EXPOSITORY WRITING .
New York:
HOLT, RINEHART AND WINSTON.
Gaya MLA
WILLIS, Hulon.
"STRUCTURE, STYLE, AND USAGE: A GUIDE TO EXPOSITORY WRITING".
New York:
HOLT, RINEHART AND WINSTON,
1964.
Textbook.