Citazione Stile APA (7a Edizione)

De George, R. T. (1962). Classical and contemporary metaphysics. Holt, Rinehart and Winston.

Citazione stile Chigago Style (17a edizione)

De George, Richard T. Classical and Contemporary Metaphysics. Nueva York: Holt, Rinehart and Winston, 1962.

Citatione MLA (9a ed.)

De George, Richard T. Classical and Contemporary Metaphysics. Holt, Rinehart and Winston, 1962.