Holden, A. (1971). Shapes, Space, and Symmetry. Dover.
Chicago Style (17th ed.) CitationHolden, Alan. Shapes, Space, and Symmetry. Nueva York: Dover, 1971.
MLA (9th ed.) CitationHolden, Alan. Shapes, Space, and Symmetry. Dover, 1971.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.