Grätzer, G. (1971). Lattice Theory: First Concepts. W.H. Freeman.
Tohutoru Kātū Chicago (17th ed.)Grätzer, George. Lattice Theory: First Concepts. San Francisco: W.H. Freeman, 1971.
Tohutoro MLA (9th ed.)Grätzer, George. Lattice Theory: First Concepts. W.H. Freeman, 1971.
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