Mansfield, D. E., & Bruckheimer, M. (1965). Major topics in modern mathematics: Set and group theory. Harcourt, Brace & World.
Cita Chicago (17th ed.)Mansfield, Donald Ernest, i Maxim Bruckheimer. Major Topics in Modern Mathematics: Set and Group Theory. New York: Harcourt, Brace & World, 1965.
Cita MLA (8th ed.)Mansfield, Donald Ernest, i Maxim Bruckheimer. Major Topics in Modern Mathematics: Set and Group Theory. Harcourt, Brace & World, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.