Gratzer, G. The congruences of a finite lattice: A proof-by-picture approach.
Cita Chicago (17th ed.)Gratzer, George. The Congruences of a Finite Lattice: A Proof-by-picture Approach.
Cita MLA (8th ed.)Gratzer, George. The Congruences of a Finite Lattice: A Proof-by-picture Approach.
Atenció: Aquestes cites poden no estar 100% correctes.