Baa baa black sheep : an opera in three acts
MLA
Berkeley, Michael, et al. Baa Baa Black Sheep: an Opera In Three Acts. Oxford: Oxford University Press, 1995
APA, 7th edition
Berkeley, M., Kipling, R., Malouf, D., & Bradshaw, S. (1995). Baa baa black sheep: an opera in three acts. Oxford: Oxford University Press
Chicago, 17th edition
Berkeley, Michael., Rudyard Kipling, David Malouf, and Susan Bradshaw. Baa baa black sheep: an opera in three acts. Oxford: Oxford University Press, 1995