Gaya APA
WHEELER, W, B., BECKER, S, D.
(1986).
Discovering the American past :
.
Boston:
Houghton Mifflin.
Gaya MLA
WHEELER, William, Bruce., BECKER, Susan, D..
"Discovering the American past :".
Boston:
Houghton Mifflin,
1986.
Buku.