APA (7th ed.) Citation

Macdonald, G. A., & Hubbard, D. H. (1973). Volcanoes of the national parks in Hawaii ([6th ed. rev.). Hawaii Natural History Association.

Chicago Style (17th ed.) Citation

Macdonald, Gordon A., and Douglass H. Hubbard. Volcanoes of the National Parks in Hawaii. [6th ed. rev. [Place of publication not identified]: Hawaii Natural History Association, 1973.

MLA (9th ed.) Citation

Macdonald, Gordon A., and Douglass H. Hubbard. Volcanoes of the National Parks in Hawaii. [6th ed. rev. Hawaii Natural History Association, 1973.