Joshi, P. S. (1993). Global aspects in gravitational and cosmology. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Joshi, Pankaj S. Global Aspects in Gravitational and Cosmology. Oxford: Clarendon Press, 1993.
Lua MLA (9ú heag.)Joshi, Pankaj S. Global Aspects in Gravitational and Cosmology. Clarendon Press, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.