APA استشهاد

Gasser, R., & Richards, W. (1974). Entropy and energy levels. Oxford University.

استشهاد بنمط شيكاغو

Gasser, R.P.H, و W.G Richards. Entropy and Energy Levels. London: Oxford University, 1974.

MLA استشهاد

Gasser, R.P.H, و W.G Richards. Entropy and Energy Levels. Oxford University, 1974.