APA-Zitierstil (7. Ausg.)

Henle, J. M. (1975). Numerous numerals. National Council of Teachers of Math.

Chicago-Zitierstil (17. Ausg.)

Henle, James M. Numerous Numerals. Reston, Va: National Council of Teachers of Math, 1975.

MLA-Zitierstil (9. Ausg.)

Henle, James M. Numerous Numerals. National Council of Teachers of Math, 1975.