APA (7th ed.) Citation

Halmos, P. R. (2021). Naive set theory. Must Have Books.

Chicago Style (17th ed.) Citation

Halmos, Paul R. Naive Set Theory. Victoria, BC: Must Have Books, 2021.

MLA (9th ed.) Citation

Halmos, Paul R. Naive Set Theory. Must Have Books, 2021.

Warning: These citations may not always be 100% accurate.