Gaya APA

PRESTON, D, R, [., SHUY, R, W, [. (1984). VARIETIES of American English: . Washington, DC.: English Language Programs Division, Bureau of ....

Gaya MLA

PRESTON, Dennis, R., [ed.]., SHUY, Roger, W., [ed.]. "VARIETIES of American English:". Washington, DC.: English Language Programs Division, Bureau of ..., 1984. Buku.