Gillespie, Ronald J.
Molecular geometry
Van Nostrand Reinhold, 1972
 Buku Teks
Sibley, Charles Gald
Phylogeny and classification of birds: a study in molecular evolution
Yale University Press, 1991
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Travers, Kenneth J.
Geometry
Laidlaw Brothers, 1987
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Jurgensen, Ray C.
Geometry
Houghton-Miffiln, 1983
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Brumfiel, Charles Francis, 1914-
Geometry
Addison-Wesley, 1962
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