Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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