एपीए उद्धरण

Calcagni, G., Papantonopoulos, L., Siopsis, G., & Tsamis, N. (2012). Quantum gravity and quantum cosmology. Springer.

शिकागो स्टाइल उद्धरण

Calcagni, Gianluca., Lefteris Papantonopoulos, George Siopsis, और Nikos Tsamis. Quantum Gravity and Quantum Cosmology. New York: Springer, 2012.

एमएलए उद्धरण

Calcagni, Gianluca., et al. Quantum Gravity and Quantum Cosmology. Springer, 2012.