d'Ors, A. (1997). Petrus Hispanus O.P., Auctor Summularum. Vivarium, 35(1), 21-71. doi:10.1163/1568534972579423
Chicago Style (17th ed.) Citationd'Ors, Angel. "Petrus Hispanus O.P., Auctor Summularum." Vivarium 35, no. 1 (1997): 21-71, https://doi.org/10.1163/1568534972579423.
MLA (8th ed.) Citationd'Ors, Angel. "Petrus Hispanus O.P., Auctor Summularum." Vivarium, vol. 35, no. 1, 1997, pp. 21-71, https://doi.org/10.1163/1568534972579423.
Warning: These citations may not always be 100% accurate.