APA Edition Citation

Bush, G. C., & Obreanu, P. E. (1965). Basic concepts of mathematics.

Chicago Edition Citation

Bush, George C., and Phillip E. Obreanu. Basic Concepts of Mathematics. 1965.

MLA Edition Citation

Bush, George C., and Phillip E. Obreanu. Basic Concepts of Mathematics. 1965.

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