Medieval architecture.

MLA

Piva, Paolo, et al. Medieval Architecture. London: Folio Society, 2012.

APA

Piva, P., Cadei, A., Gandolfo, F.Piva, P. (2012). Medieval architecture. London: Folio Society.

Chicago

Cadei, A., F Gandolfo, and P Piva. Medieval Architecture.. Edited by Paolo Piva. London: Folio Society, 2012.