Cita APA (7th ed.)

National Council of Teachers of Mathematics, Silvey, L., & Smart, J. R. (1982). Mathematics for the middle grades (5-9). NCTM.

Cita Chicago (17th ed.)

National Council of Teachers of Mathematics, Linda Silvey, i James R. Smart. Mathematics for the Middle Grades (5-9). Reston, VA: NCTM, 1982.

Cita MLA (9th ed.)

National Council of Teachers of Mathematics, et al. Mathematics for the Middle Grades (5-9). NCTM, 1982.