MLA

Boëthius, Axel, Roger Ling, and Tom Rasmussen. Etruscan and Early Roman Architecture. 2d integrated ed., rev. / Harmondsworth, Eng.: Penguin Books, 1978.

APA

Boëthius, A., Ling, R., & Rasmussen, T. (1978). Etruscan and early Roman architecture. 2d integrated ed., rev. / Harmondsworth, Eng.: Penguin Books.

Chicago

Boëthius, Axel, Roger Ling, and Tom Rasmussen. Etruscan and Early Roman Architecture. 2d integrated ed., rev. / Harmondsworth, Eng.: Penguin Books, 1978.