Rucker, R. v. B. (1977). Geometry, relativity and the fourth dimension. Dover.
Lua i Stíl Chicago (17ú heag.)Rucker, Rudolf v. B. Geometry, Relativity and the Fourth Dimension. Nueva York: Dover, 1977.
Lua MLA (9ú heag.)Rucker, Rudolf v. B. Geometry, Relativity and the Fourth Dimension. Dover, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.