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-viite (17. p.)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-viite (8. p.)Sheeler, Willard D. Welcome to English: Work Book 2/ Willard D. Sheeler; Jean N. Dale; Susan C. Bayley. Indonesia : English Language Services Inc., 1991.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.