APA (7th ed.) Citation

McKitterick, R., Osborne, J. 1., Richardson, C. M., & Story, J. (2013). Old Saint Peter's, Rome. Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

McKitterick, Rosamond, John 19XX- Osborne, Carol M. Richardson, and Joanna Story. Old Saint Peter's, Rome. Cambridge [u.a.]: Cambridge Univ. Press, 2013.

MLA (8th ed.) Citation

McKitterick, Rosamond, et al. Old Saint Peter's, Rome. Cambridge Univ. Press, 2013.