Cita APA (7th ed.)

Sigler, L. E. (1966). Exercises in set theory. D. Van Nostrand.

Cita Chicago (17th ed.)

Sigler, L. E. Exercises in Set Theory. Princeton: D. Van Nostrand, 1966.

Cita MLA (9th ed.)

Sigler, L. E. Exercises in Set Theory. D. Van Nostrand, 1966.