Newman Barnett. The Sublime is Now // Art in Theory 1900–1990 / Ed. Charles Harrison, Paul Wood. London, 1992.

Norwich John J. The Popes: A History. London, 2012.

O’Malley John. The Theology behind Michelangelo’s Ceiling // The Sistine Chapel: Michelangelo Rediscovered. London, 1986. P. 92–148.

Ogilvie Brian W. The Science of Describing: Natural History in Renaissance Europe. Chicago, 2006.

Ovid. Metamorphoses / Trans. M. Mary Innes. Harmondsworth, 1955.

Paoletti John T. The Rondanini «Pietà»: Ambiguity Maintained through the Palimpsest // Artibus et Historiae. Vol. 21. No. 42 (2000). P. 53–80.

Papini Giovanni. Michelangelo: His Life and His Era. New York, 1952.

Parker Deborah. The Role of Letters in Biographies of Michelangelo // Renaissance Quarterly. Vol. 58. No. 1 (2005). P. 91–126.

Parks George B. The Pier Luigi Farnese Scandal: An English Report // Renaissance News. Vol. 15. No. 3 (1962). P. 193–200.

Parks Tim. Medici Money: Banking, Metaphysics and Art in Fifteenth-Century Florence. London, 2006.