APA (7e ed.) Bronvermelding

Sheeler, W. D. (1991). Welcome to english: Work Book 2/ Willard D. Sheeler; Jean N. Dale; Susan C. Bayley. Indonesia : English Language Services Inc..

Chicago (17e ed.) Bronvermelding

Sheeler, Willard D. Welcome to English: Work Book 2/ Willard D. Sheeler; Jean N. Dale; Susan C. Bayley. Indonesia : English Language Services Inc., 1991.

MLA (8e ed.) Bronvermelding

Sheeler, Willard D. Welcome to English: Work Book 2/ Willard D. Sheeler; Jean N. Dale; Susan C. Bayley. Indonesia : English Language Services Inc., 1991.