Retief, F. P., & Cilliers, L. Diseases and causes of death among the popes. University of the Free State.
Chicago Style (17th ed.) CitationRetief, Francois P., and Louise Cilliers. Diseases and Causes of Death Among the Popes. University of the Free State.
MLA (9th ed.) CitationRetief, Francois P., and Louise Cilliers. Diseases and Causes of Death Among the Popes. University of the Free State.
Warning: These citations may not always be 100% accurate.