Gaya APA
Gladstone, William. (2009).
The Twelve .
New York:
Vanguard Press.
Gaya Chicago
Gladstone, William.
The Twelve.
New York:
Vanguard Press,
2009.
Buku Teks.
Gaya MLA
Gladstone, William.
The Twelve.
New York:
Vanguard Press,
2009.
Buku Teks.
Gaya Turabian
Gladstone, William.
The Twelve.
New York:
Vanguard Press,
2009.
Buku Teks.