Dickson, L. E. (1959). Algebraic theories. Dover.
Cita Chicago (17th ed.)Dickson, Leonard Eugene. Algebraic Theories. Nueva York: Dover, 1959.
Cita MLA (9th ed.)Dickson, Leonard Eugene. Algebraic Theories. Dover, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.