APA (7th ed.) Citation

Froelich, G. W., Bartkovich, K. G., Foester, P. A., & Hirsch, C. R. (1991). Connecting mathematics. National Council of Teachers of Mathematics.

Chicago Style (17th ed.) Citation

Froelich, Gary W., Kevin G. Bartkovich, Paul A. Foester, and Christian R. Hirsch. Connecting Mathematics. Reston, VA: National Council of Teachers of Mathematics, 1991.

MLA (9th ed.) Citation

Froelich, Gary W., et al. Connecting Mathematics. National Council of Teachers of Mathematics, 1991.