APA (7th ed.) Citation

Farago, P. S. (1970). Free-electron physics. Penguin Books.

Chicago Style (17th ed.) Citation

Farago, P. S. Free-electron Physics. [Hammondsworth, Middlesex, Eng.]: Penguin Books, 1970.

MLA (9th ed.) Citation

Farago, P. S. Free-electron Physics. Penguin Books, 1970.