APA-referens

Hartle James B. (2014). Gravity: An introduction to Einstein's general relativity. Pearson.

Chicago-stil citat

Hartle James B. Gravity: An Introduction to Einstein's General Relativity. Noida: Pearson, 2014.

MLA-referens

Hartle James B. Gravity: An Introduction to Einstein's General Relativity. Pearson, 2014.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.