APA Citation

Levy, A. (1965). A hierarchy of formulas in set theory. Providence, R.I.: American Mathematical Society.

Chicago Style Citation

Levy, Azriel. A Hierarchy of Formulas in Set Theory. Providence, R.I.: American Mathematical Society, 1965.

MLA Citation

Levy, Azriel. A Hierarchy of Formulas in Set Theory. Providence, R.I.: American Mathematical Society, 1965.

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