APA (7th ed.) Citation

Bull, R. E. (1970). Summerhill USA. Penguin Books.

Chicago Style (17th ed.) Citation

Bull, Richard E. Summerhill USA. Baltimore: Penguin Books, 1970.

MLA (9th ed.) Citation

Bull, Richard E. Summerhill USA. Penguin Books, 1970.

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