Citazione Stile APA (7a Edizione)

Crowdis, D. G., & Wheeler, B. W. (1969). Introduction to mathematical ideas. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Crowdis, David G., e Brandon W. Wheeler. Introduction to Mathematical Ideas. Nueva York: McGraw-Hill, 1969.

Citatione MLA (9a ed.)

Crowdis, David G., e Brandon W. Wheeler. Introduction to Mathematical Ideas. McGraw-Hill, 1969.