Dyfyniad APA

Sheeler, W. D. (1991). WELCOME TO ENGLISH BOOK 4. English Language Service.

Dyfyniad Arddull Chicago

Sheeler, Willard D. WELCOME TO ENGLISH BOOK 4. English Language Service, 1991.

Dyfyniad MLA

Sheeler, Willard D. WELCOME TO ENGLISH BOOK 4. English Language Service, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.