Penggayaan APA
KRAL, Thomas. (2005).
Discover America .
America:
The United States.
Chicago Style
KRAL, Thomas.
Discover America.
America:
The United States,
2005.
Buku.
MLA Style
KRAL, Thomas.
Discover America.
America:
The United States,
2005.
Buku.
Turabian Style
KRAL, Thomas.
Discover America.
America:
The United States,
2005.
Buku.