Παραπομπή APA

Smolin, L. (2002). Three roads to quantum gravity. Basic Books.

Παραπομπή Chicago Style

Smolin, Lee. Three Roads to Quantum Gravity. New York, N.Y: Basic Books, 2002.

Παραπομπή MLA

Smolin, Lee. Three Roads to Quantum Gravity. Basic Books, 2002.