APA (7th ed.) Citation

Robert Decker, B. D. (1981). Volcanoes. WH Freeman.

Chicago Style (17th ed.) Citation

Robert Decker, Barbara Decker. Volcanoes. WH Freeman, 1981.

MLA (8th ed.) Citation

Robert Decker, Barbara Decker. Volcanoes. WH Freeman, 1981.

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