Simons, G. L. (1975). Simons' book of world sexual records: G. L. Simons. Bell.
Lua i Stíl Chicago (17ú heag.)Simons, Geoffrey L. Simons' Book of World Sexual Records: G. L. Simons. New York: Bell, 1975.
Lua MLA (8ú heag.)Simons, Geoffrey L. Simons' Book of World Sexual Records: G. L. Simons. Bell, 1975.
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