Hartle, J. B. (2014). Gravity: An introduction to Einstein's general relativity. Pearson.
Citazione stile Chigago Style (17a edizione)Hartle, James B. Gravity: An Introduction to Einstein's General Relativity. Nodia: Pearson, 2014.
Citatione MLA (9a ed.)Hartle, James B. Gravity: An Introduction to Einstein's General Relativity. Pearson, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.