APA Style

Mathematics, N, C, O, T, O. (2002). Making Sense of Fractions, Ratios, and Proportions: 2002 Yearbook . United States of America: The National Council of Teachers of Mathematics.

MLA Style

Mathematics, National, Council, Of, Teachers, Of. "Making Sense of Fractions, Ratios, and Proportions: 2002 Yearbook". United States of America: The National Council of Teachers of Mathematics, 2002. Text.