Cita APA

Sigler, L., & Sigler, L. (1966). Exercises in set theory. Toronto: D. Van Nostrand.

Citación estilo Chicago

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

Cita MLA

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