APA-referens (7:e uppl.)

National Council of Teachers of Mathematics, Aichele, D. B., & Coxford, A. F. (1994). Professional development for teachers of mathematics. NCTM.

Chicago-referens (17:e uppl.)

National Council of Teachers of Mathematics, Douglas B. Aichele, och Arthur F. Coxford. Professional Development for Teachers of Mathematics. Reston, VA: NCTM, 1994.

MLA-referens (9:e uppl.)

National Council of Teachers of Mathematics, et al. Professional Development for Teachers of Mathematics. NCTM, 1994.