Gudder, S. (1994). A mathematical journey (2nd ed.). McGraw-Hill.
Cita Chicago (17th ed.)Gudder, Stanley. A Mathematical Journey. 2nd ed. New York: McGraw-Hill, 1994.
Cita MLA (9th ed.)Gudder, Stanley. A Mathematical Journey. 2nd ed. McGraw-Hill, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.