Gaya APA

Wishon, G, E., Burks, J, M. (1980). Let's Write English (ed.revisi). New York,U.S.A: Litton Educatonal Pulishing Intenaional.

Gaya MLA

Wishon, George, E.., Burks, Julia, M.. "Let's Write English". ed.revisi New York,U.S.A: Litton Educatonal Pulishing Intenaional, 1980. Text.