Wittschiebe, C. (1974). God invented sex. Southern Publishing Association.
Lua i Stíl Chicago (17ú heag.)Wittschiebe, Charles. God Invented Sex. Nashville, TN: Southern Publishing Association, 1974.
Lua MLA (9ú heag.)Wittschiebe, Charles. God Invented Sex. Southern Publishing Association, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.