Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.