Sheeler, W. D. (1991). Welcome to English: Book 3/ Willard D. Sheller. Indonesia: English Language Services Inc..
Dyfyniad Arddull ChicagoSheeler, Willard D. Welcome to English: Book 3/ Willard D. Sheller. Indonesia: English Language Services Inc., 1991.
Dyfyniad MLASheeler, Willard D. Welcome to English: Book 3/ Willard D. Sheller. Indonesia: English Language Services Inc., 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.