Cita APA (7th ed.)

National Council of Teachers of Mathematics, Dalton, L. C., & Snyder, H. D. (1973). Topics for mathematics clubs. National Council of Teachers of Mathematics.

Cita Chicago (17th ed.)

National Council of Teachers of Mathematics, LeRoy C. Dalton, i Henry D. Snyder. Topics for Mathematics Clubs. Reston, VA: National Council of Teachers of Mathematics, 1973.

Cita MLA (9th ed.)

National Council of Teachers of Mathematics, et al. Topics for Mathematics Clubs. National Council of Teachers of Mathematics, 1973.