APA Edition Citation

Gasser, R. P. H., & Richards, W. G. (1986). Entropy and energy levels.

Chicago Edition Citation

Gasser, R P H., and W G. Richards. Entropy and Energy Levels. London, ELBS, 1986.

MLA Edition Citation

Gasser, R P H., and W G. Richards. Entropy and Energy Levels. 1986.

Warning: These citations may not always be 100% accurate.