APA (7th ed.) Citation

Francis, P. (1976). Volcanoes. Penguin Books.

Chicago Style (17th ed.) Citation

Francis, Peter. Volcanoes. Harmondsworth: Penguin Books, 1976.

MLA (9th ed.) Citation

Francis, Peter. Volcanoes. Penguin Books, 1976.

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