Boehm, W., & Prautzsch, H. (1994). Geometric concepts for geometric design. A.K. Peters.
Lua i Stíl Chicago (17ú heag.)Boehm, Wolfgang, agus Hartmut Prautzsch. Geometric Concepts for Geometric Design. Wellesley, Mass: A.K. Peters, 1994.
Lua MLA (8ú heag.)Boehm, Wolfgang, agus Hartmut Prautzsch. Geometric Concepts for Geometric Design. A.K. Peters, 1994.
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