APA

Wallace A. H., . (1968). Differential topology; first steps. New York: W. A. Benjamin.

Chicago

Wallace Andrew H, . 1968. Differential topology; first steps. New York: W. A. Benjamin.

Harvard

Wallace A. H., . (1968). Differential topology; first steps. New York: W. A. Benjamin.

MLA

Wallace Andrew H, . Differential topology; first steps. New York: W. A. Benjamin. 1968.