APA (7. basım) Alıntı

Trafton, P. R. (1989). New directions for elementary school mathematics. National Council of Teachers of Mathematics.

Chicago Style (17. basım) Atıf

Trafton, Paul R. New Directions for Elementary School Mathematics. Reston, Va.: National Council of Teachers of Mathematics, 1989.

MLA (8th ed.) Atıf

Trafton, Paul R. New Directions for Elementary School Mathematics. National Council of Teachers of Mathematics, 1989.