APA (7th ed.) Citation

Sparrow, L., Frid, S., & Zimmermann, G. (2009). The mentor as a "fellow worker". National Council of Teachers of Mathematics.

Chicago Style (17th ed.) Citation

Sparrow, Len, Sandra Frid, and G. Zimmermann. The Mentor as a "Fellow Worker". National Council of Teachers of Mathematics, 2009.

MLA (9th ed.) Citation

Sparrow, Len, et al. The Mentor as a "Fellow Worker". National Council of Teachers of Mathematics, 2009.