Cita APA (7th ed.)

Hausdorff, F. (1978). Set theory (3a. ed.). Chelsea Publishing.

Cita Chicago (17th ed.)

Hausdorff, Felix. Set Theory. 3a. ed. Nueva York: Chelsea Publishing, 1978.

Cita MLA (9th ed.)

Hausdorff, Felix. Set Theory. 3a. ed. Chelsea Publishing, 1978.