Cita APA (7a ed.)

Verhelst, D., & Verbeke, G. (1976). Aquinas and problems of his time. University Press [etc.].

Cita Chicago Style (17a ed.)

Verhelst, Daniel, y Gerard Verbeke. Aquinas and Problems of His Time. Leuven [etc.]: University Press [etc.], 1976.

Cita MLA (9a ed.)

Verhelst, Daniel, y Gerard Verbeke. Aquinas and Problems of His Time. University Press [etc.], 1976.