Gaya APA

Syoc, W, B, V., Syoc, F, S, V. (1971). Let's learn English: Advanced course: Book 5 . New York: American Book Company.

Gaya MLA

Syoc, W., Bryce, Van., Syoc, Florence, S., Van. "Let's learn English: Advanced course: Book 5". New York: American Book Company, 1971. Text.