Gaya APA

a Writer's Resource. (2009). New York: [s.n.].

Gaya Chicago

a Writer's Resource. . New York: [s.n.], 2009. Text.

Gaya MLA

a Writer's Resource. . New York: [s.n.], 2009. Text.

Gaya Turabian

a Writer's Resource. New York: [s.n.], 2009. Print.