Lockwood, E. H., & Macmillan, R. H. (1978). Geometric symmetry. Cambridge University Press.

Lockwood, E. H., and Robert Hugh Macmillan. Geometric Symmetry. Cambridge ; New York: Cambridge University Press, 1978.

Lockwood, E. H., and Robert Hugh Macmillan. Geometric Symmetry. Cambridge University Press, 1978.