Gaya APA
WISHON, G, E., BURKS, J, M. (1980).
Let's Write English (Ed. Revisi).
Amerika:
Litton Educational Publishing International.
Gaya MLA
WISHON, George, E.., BURKS, Julia, M.
"Let's Write English".
Ed. Revisi
Amerika:
Litton Educational Publishing International,
1980.
Text.