Cita APA (7a ed.)

Estados Unidos. National Council of Teachers of Mathematics & National Council of Teachers of Mathematics (Estados Unidos). (1961). Evaluation in mathematics: Twentnty-sixth yearbook. National council of teachers.

Cita Chicago Style (17a ed.)

Estados Unidos. National Council of Teachers of Mathematics y National Council of Teachers of Mathematics (Estados Unidos). Evaluation in Mathematics: Twentnty-sixth Yearbook. Washington: National council of teachers, 1961.

Cita MLA (8a ed.)

Estados Unidos. National Council of Teachers of Mathematics y National Council of Teachers of Mathematics (Estados Unidos). Evaluation in Mathematics: Twentnty-sixth Yearbook. National council of teachers, 1961.