APA Style
Roop, Connie. (2000).
Christopher columbus .
New York:
Scholastic Inc.
Chicago Style
Roop, Connie.
Christopher columbus.
New York:
Scholastic Inc,
2000.
Buku Teks.
MLA Style
Roop, Connie.
Christopher columbus.
New York:
Scholastic Inc,
2000.
Buku Teks.
Turabian Style
Roop, Connie.
Christopher columbus.
New York:
Scholastic Inc,
2000.
Buku Teks.