APA (7th ed.) Citation

Byrne, A., & McMahon, S. (2003). Derry in old photographs. Gill & Macmillan.

Chicago Style (17th ed.) Citation

Byrne, Art, and Seán McMahon. Derry in Old Photographs. Dublin: Gill & Macmillan, 2003.

MLA (9th ed.) Citation

Byrne, Art, and Seán McMahon. Derry in Old Photographs. Gill & Macmillan, 2003.