Παραπομπή APA

Liu, C. L. (1972). Topics in combinatorial mathematics. Mathematical Association of America.

Παραπομπή Chicago Style

Liu, C. L. Topics in Combinatorial Mathematics. [Buffalo, N.Y.]: Mathematical Association of America, 1972.

Παραπομπή MLA

Liu, C. L. Topics in Combinatorial Mathematics. Mathematical Association of America, 1972.