Symmetry Festival, Senechal, M., & Fleck, G. M. (1977). Patterns of symmetry. University of Massachusetts Press.
Citazione stile Chigago Style (17a edizione)Symmetry Festival, Marjorie Senechal, e George M. Fleck. Patterns of Symmetry. Amherst: University of Massachusetts Press, 1977.
Citatione MLA (8a ed.)Symmetry Festival, et al. Patterns of Symmetry. University of Massachusetts Press, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.