Cita APA (7a ed.)

Sheeler, W. D. (1991). Welcome to English: Book 3/ Willard D. Sheller. Indonesia: English Language Services Inc..

Cita Chicago Style (17a ed.)

Sheeler, Willard D. Welcome to English: Book 3/ Willard D. Sheller. Indonesia: English Language Services Inc., 1991.

Cita MLA (8a ed.)

Sheeler, Willard D. Welcome to English: Book 3/ Willard D. Sheller. Indonesia: English Language Services Inc., 1991.

Precaución: Estas citas no son 100% exactas.