Citazione Stile APA (7a Edizione)

Ehlers. Logic by Way of Set Theory. Holt, Rinehart and Winston.

Citazione stile Chigago Style (17a edizione)

Ehlers. Logic by Way of Set Theory. London / Delhi / New York: Holt, Rinehart and Winston.

Citatione MLA (9a ed.)

Ehlers. Logic by Way of Set Theory. Holt, Rinehart and Winston.