APA-referens (7:e uppl.)

Ashlock, D., & Lee, C. (2020). An introduction to proofs with set theory. Springer Nature.

Chicago-referens (17:e uppl.)

Ashlock, Daniel, och Colin Lee. An Introduction to Proofs with Set Theory. Switzerland: Springer Nature, 2020.

MLA-referens (9:e uppl.)

Ashlock, Daniel, och Colin Lee. An Introduction to Proofs with Set Theory. Springer Nature, 2020.