APA (7th ed.) Citation

Boom, R., & Christensen, C. (1975). The Island of Hawai'i: Scenic and historic sites. Robert Boom Pub. Co..

Chicago Style (17th ed.) Citation

Boom, Robert, and Chris Christensen. The Island of Hawai'i: Scenic and Historic Sites. Honolulu: Robert Boom Pub. Co., 1975.

MLA (9th ed.) Citation

Boom, Robert, and Chris Christensen. The Island of Hawai'i: Scenic and Historic Sites. Robert Boom Pub. Co., 1975.