MLA

Calcagni, Gianluca, et al. Quantum Gravity and Quantum Cosmology. Springer Berlin Heidelberg, 2013.

APA

Calcagni, G., Papantonopoulos, L., Siopsis, G., & Tsamis, N. (2013). Quantum Gravity and Quantum Cosmology. Springer Berlin Heidelberg.

Chicago

Calcagni, Gianluca, Lefteris Papantonopoulos, George Siopsis, and Nikos Tsamis. Quantum Gravity and Quantum Cosmology. : Springer Berlin Heidelberg, 2013.