Παραπομπή σε μορφή APA (7η εκδ.)

Frè, P. G. (2013). Gravity, a Geometrical Course: Volume 1: Development of the Theory and Basic Physical Applications. Springer Netherlands : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Frè, Pietro Giuseppe. Gravity, a Geometrical Course: Volume 1: Development of the Theory and Basic Physical Applications. Dordrecht: Springer Netherlands : Imprint: Springer, 2013.

Παραπομπή σε μορφή MLA (8th εκδ.)

Frè, Pietro Giuseppe. Gravity, a Geometrical Course: Volume 1: Development of the Theory and Basic Physical Applications. Springer Netherlands : Imprint: Springer, 2013.