Gaya APA

Dixson, R, J. (1983). Graded Exercises in English . United States of America USA: Prentice-Hall, Inc.

Gaya MLA

Dixson, Robert, J.. "Graded Exercises in English". United States of America USA: Prentice-Hall, Inc, 1983. Buku Pend. Bahasa Inggris.