Halpern, P. (2004). The great beyond: Higher dimensions, parallel universes, and the extraordinary search for a theory of everything. John Wiley & Sons.
Čikaški stil citiranja (17. izdanje)Halpern, Paul. The Great Beyond: Higher Dimensions, Parallel Universes, and the Extraordinary Search for a Theory of Everything. John Wiley & Sons, 2004.
MLA način citiranja (8. izdanje)Halpern, Paul. The Great Beyond: Higher Dimensions, Parallel Universes, and the Extraordinary Search for a Theory of Everything. John Wiley & Sons, 2004.
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