APA (7th ed.) Zitazioa
Smith, K. J. (1991). The nature of mathematics (6th ed.). Brooks/Cole Pub. Co..
Chicago Style (17th ed.) Zitazioa
Smith, Karl J. The Nature of Mathematics. 6th ed. Pacific Grove, Calif.: Brooks/Cole Pub. Co., 1991.
MLA (9th ed.) Zitazioa
Smith, Karl J. The Nature of Mathematics. 6th ed. Brooks/Cole Pub. Co., 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.