Cita APA (7a ed.)

Hillman, A. P., Alexanderson, G. L., & Grassl, R. M. (1987). Discrete and combinatorial mathematics: Abraham P. Hillman ...[et al].

Cita Chicago Style (17a ed.)

Hillman, Abraham P., Gerald L. Alexanderson, y Richard M. Grassl. Discrete and Combinatorial Mathematics: Abraham P. Hillman ...[et Al]. Dellen Pub. Company, 1987.

Cita MLA (9a ed.)

Hillman, Abraham P., et al. Discrete and Combinatorial Mathematics: Abraham P. Hillman ...[et Al]. 1987.