APA

Cohen D. I. A., . (1978). Basic techniques of combinatorial theory. New York: John Wiley & Sons.

Chicago

Cohen Daniel I A, . 1978. Basic techniques of combinatorial theory. New York: John Wiley & Sons.

Harvard

Cohen D. I. A., . (1978). Basic techniques of combinatorial theory. New York: John Wiley & Sons.

MLA

Cohen Daniel I A, . Basic techniques of combinatorial theory. New York: John Wiley & Sons. 1978.