Childs, L. N. (2009). Higher Algebra: A Concrete Introduction to (3rd ed.). Springer.
Cita Chicago (17th ed.)Childs, Lindsay N. Higher Algebra: A Concrete Introduction to. 3rd ed. New York: Springer, 2009.
Cita MLA (9th ed.)Childs, Lindsay N. Higher Algebra: A Concrete Introduction to. 3rd ed. Springer, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.