SpringerLink (Online service), Papantonopoulos, L., Siopsis, G., Tsamis, N., & Calcagni, G. (2013). Quantum Gravity and Quantum Cosmology. Springer Berlin Heidelberg Imprint Springer.
Čikaški stil citiranja (17. izdanje)SpringerLink (Online service), Lefteris Papantonopoulos, George Siopsis, Nikos Tsamis, i Gianluca Calcagni. Quantum Gravity and Quantum Cosmology. Berlin Heidelberg: Springer Berlin Heidelberg Imprint Springer, 2013.
MLA način citiranja (8. izdanje)SpringerLink (Online service), et al. Quantum Gravity and Quantum Cosmology. Springer Berlin Heidelberg Imprint Springer, 2013.
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