Gaya APA
Town and country. (1993).
New York:
Thomson Learning.
Gaya Chicago
Town and country.
.
New York:
Thomson Learning,
1993.
Buku.
Gaya MLA
Town and country.
.
New York:
Thomson Learning,
1993.
Buku.
Gaya Turabian
Town and country.
New York:
Thomson Learning,
1993.
Buku.