Gaya APA
Roop, Connie, Peter. (2001).
Christopher Columbus .
New York:
Scholastic Inc.
Gaya Chicago
Roop, Connie, Peter.
Christopher Columbus.
New York:
Scholastic Inc,
2001.
Text.
Gaya MLA
Roop, Connie, Peter.
Christopher Columbus.
New York:
Scholastic Inc,
2001.
Text.
Gaya Turabian
Roop, Connie, Peter.
Christopher Columbus.
New York:
Scholastic Inc,
2001.
Print.