Gaya APA

Sujarweni, V, W. (1980). Let's write english/George E. Wishon, Julia M. Burks . Jena :: American Book Company.

Gaya MLA

Sujarweni, V., Wiratna. "Let's write english/George E. Wishon, Julia M. Burks". Jena :: American Book Company, 1980. .