Profile of a City, 312-1308. Princeton University Press, Princeton. ISBN 0-691-04961-0. Krautheimer, Richard (1985). The Rome of Alexander VII, 1655-1667....
ISBN 0-415-92976-8; Rome Profile of a City, Richard Krautheimer, 2000, pp. 4, 65 ISBN 0-691-04961-0; Ancient Rome, The Archaeology of the Eternal City, Editors Jon Coulston...
Rome : profile of a city, 312-1308. Princeton University Press. ISBN 0691049610. OCLC 42733794. Ansoff, I.H. and McDonnell, E.J. (1990), "Implanting Strategic...
Krautheimer (2000), Rome, Profile of a City 312–1308, pp. 62–64. ISBN 0-691-04961-0 Krautheimer, p. 90 Catholic Online (2011). "Pope Saint Martin I – Saints...