APA

Ash R. B., . (1971). Complex variables. New York [u.a.]: Academic Press.

Chicago

Ash Robert B, . 1971. Complex variables. New York [u.a.]: Academic Press.

Harvard

Ash R. B., . (1971). Complex variables. New York [u.a.]: Academic Press.

MLA

Ash Robert B, . Complex variables. New York [u.a.]: Academic Press. 1971.