Cita APA (7th ed.)

Barbeau, E., Klamkin, M. S., & Moser, W. O. J. (1995). Five hundred mathematical challenges. Mathematical Association of America.

Cita Chicago (17th ed.)

Barbeau, Edward, Murray S. Klamkin, i W. O. J. Moser. Five Hundred Mathematical Challenges. [Washington, D.C.]: Mathematical Association of America, 1995.

Cita MLA (9th ed.)

Barbeau, Edward, et al. Five Hundred Mathematical Challenges. Mathematical Association of America, 1995.