Cita APA (7th ed.)

National Council of Teachers of Mathematics, Suydam, M. N., & Reys, R. E. (1978). Developing computational skills. NCTM.

Cita Chicago (17th ed.)

National Council of Teachers of Mathematics, Marilyn N. Suydam, i Robert E. Reys. Developing Computational Skills. Reston, VA: NCTM, 1978.

Cita MLA (9th ed.)

National Council of Teachers of Mathematics, et al. Developing Computational Skills. NCTM, 1978.