Grätzer, G. (1971). Lattice Theory: First Concepts. W.H. Freeman.
Chicago Style (17th ed.) ZitazioaGrätzer, George. Lattice Theory: First Concepts. San Francisco: W.H. Freeman, 1971.
MLA (9th ed.) ZitazioaGrätzer, George. Lattice Theory: First Concepts. W.H. Freeman, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.