APA (7th ed.) Citation

Hilary Knight & David Wright. Volcanoes. Macdonald &co Ltd.

Chicago Style (17th ed.) Citation

Hilary Knight and David Wright. Volcanoes. London: Macdonald &co Ltd.

MLA (9th ed.) Citation

Hilary Knight and David Wright. Volcanoes. Macdonald &co Ltd.

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