APA

Symposium sobre Copyright Law, University of Columbia, . (1980). Copywright law. New York: columbia University.

Chicago

Symposium sobre Copyright Law, University of Columbia, . 1980. Copywright law. New York: columbia University.

Harvard

Symposium sobre Copyright Law, University of Columbia, . (1980). Copywright law. New York: columbia University.

MLA

Symposium sobre Copyright Law, University of Columbia, . Copywright law. New York: columbia University. 1980.