APA (7th ed.) Citation

Pegis, A. C. (1934). St. Thomas and the problem of the soul in the thirteenth century. Pontifical Institute of Mediaeval Studies.

Chicago Style (17th ed.) Citation

Pegis, Anton Charles. St. Thomas and the Problem of the Soul in the Thirteenth Century. Toronto: Pontifical Institute of Mediaeval Studies, 1934.

MLA (9th ed.) Citation

Pegis, Anton Charles. St. Thomas and the Problem of the Soul in the Thirteenth Century. Pontifical Institute of Mediaeval Studies, 1934.