Παραπομπή APA

Gelbaum, B. R., & Olmsted, J. M. H. (1990). Theorems and counterexamples in mathematics. Springer-Verlag.

Παραπομπή Chicago Style

Gelbaum, Bernard R., και John Meigs Hubbell Olmsted. Theorems and Counterexamples in Mathematics. New York: Springer-Verlag, 1990.

Παραπομπή MLA

Gelbaum, Bernard R., και John Meigs Hubbell Olmsted. Theorems and Counterexamples in Mathematics. Springer-Verlag, 1990.