Citação norma APA

(1991). Discrete mathematics across the curriculum, K-12: 1991 yearbook. Reston, Virginia: National Council of Teachers of Mathematics.

Citação norma Chicago

Discrete Mathematics Across the Curriculum, K-12: 1991 Yearbook. Reston, Virginia: National Council of Teachers of Mathematics, 1991.

Citação norma MLA

Discrete Mathematics Across the Curriculum, K-12: 1991 Yearbook. Reston, Virginia: National Council of Teachers of Mathematics, 1991.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.