APA (7th ed.) Citation

Gibson, A. H. (1913). Natural sources of energy. University press; G. P. Putnam's sons.

Chicago Style (17th ed.) Citation

Gibson, Arnold Hartley. Natural Sources of Energy. Cambridge [England] : New York: University press; G. P. Putnam's sons, 1913.

MLA (9th ed.) Citation

Gibson, Arnold Hartley. Natural Sources of Energy. University press; G. P. Putnam's sons, 1913.