Gaya APA
The Americana Annual 1999. (1999).
Canada:
Grolier.
Gaya Chicago
The Americana Annual 1999.
~.
Canada:
Grolier,
1999.
Buku.
Gaya MLA
The Americana Annual 1999.
~.
Canada:
Grolier,
1999.
Buku.
Gaya Turabian
The Americana Annual 1999.
Canada:
Grolier,
1999.
Buku.