APA (7th ed.) Citation

Dorr, D. (1983). Option for the poor: A hundred years of Vatican Social teaching. Gill and Macmillan [etc.].

Chicago Style (17th ed.) Citation

Dorr, Donal. Option for the Poor: A Hundred Years of Vatican Social Teaching. Dublin [etc.]: Gill and Macmillan [etc.], 1983.

MLA (9th ed.) Citation

Dorr, Donal. Option for the Poor: A Hundred Years of Vatican Social Teaching. Gill and Macmillan [etc.], 1983.