Παραπομπή σε μορφή APA (7η εκδ.)

National Council of Teachers of Mathematics. (1926). Yearbook. National Council of Teachers of Mathematics.

Παραπομπή σε μορφή Chicago (17η εκδ.)

National Council of Teachers of Mathematics. Yearbook. [Place of publication not identified]: National Council of Teachers of Mathematics, 1926.

Παραπομπή σε μορφή MLA (9th εκδ.)

National Council of Teachers of Mathematics. Yearbook. National Council of Teachers of Mathematics, 1926.