APA (7th ed.) Citation

SHEELER, W. D. (1991). WELCOME TO ENGLISH BOOK 6. OXPORD UNIVERSITY PRESS.

Chicago Style (17th ed.) Citation

SHEELER, WILLARD D. WELCOME TO ENGLISH BOOK 6. OXPORD UNIVERSITY PRESS, 1991.

MLA (8th ed.) Citation

SHEELER, WILLARD D. WELCOME TO ENGLISH BOOK 6. OXPORD UNIVERSITY PRESS, 1991.