Cita APA (7a ed.)

Sheeeler, W. D. (1991). Welcome to English 6: Buku Penuntun/ Willard D Sheeeler. Indonesia : Inglish Language S. Inc.

Cita Chicago Style (17a ed.)

Sheeeler, Willard D. Welcome to English 6: Buku Penuntun/ Willard D Sheeeler. Indonesia : Inglish Language S. Inc, 1991.

Cita MLA (8a ed.)

Sheeeler, Willard D. Welcome to English 6: Buku Penuntun/ Willard D Sheeeler. Indonesia : Inglish Language S. Inc, 1991.