Gaya APA

Halmos, P, R., Theory, N, S. (1974). Undergraduate Texts in Mathematics (Cet. 1). United States of America: Litton Educational Publishing.

Gaya MLA

Halmos, Paul, R.., Theory, Naive, Set. "Undergraduate Texts in Mathematics". Cet. 1 United States of America: Litton Educational Publishing, 1974. Text.