Gaya APA
Keene, C., Pamintuan, M. (2007).
Nancy Drew and the Clue Crew #12: Valentine's Day Secret .
New York:
Aladdin Paperbacks.
Gaya MLA
Keene, Carolyn., Pamintuan, Macky.
"Nancy Drew and the Clue Crew #12: Valentine's Day Secret".
New York:
Aladdin Paperbacks,
2007.
Text.