APA

Dean R. A., . (1990). Classical abstract algebra. New York [u.a.]: Harper & Row.

Chicago

Dean Richard A, . 1990. Classical abstract algebra. New York [u.a.]: Harper & Row.

Harvard

Dean R. A., . (1990). Classical abstract algebra. New York [u.a.]: Harper & Row.

MLA

Dean Richard A, . Classical abstract algebra. New York [u.a.]: Harper & Row. 1990.