Gaya APA

Frè, P, G. (2012). Gravity, a geometrical course ; Volume 2: black holes, cosmology and Introduction to supergravity . Dordrecht, Netherland: Springer Dordrecht.

Gaya MLA

Frè, Pietro, Giuseppe. "Gravity, a geometrical course ; Volume 2: black holes, cosmology and Introduction to supergravity". Dordrecht, Netherland: Springer Dordrecht, 2012. Electronic Resource.