Colley, C. C., & Row, A. T. (1977). The century of Robert H. Forbes: The career of a pioneer agriculturist, agronomist, environmentalist, conservationist and water specialist in Arizona and abroad. Arizona Historical Society.
Chicago Style (17th ed.) CitationColley, Charles C., and A. Tracy Row. The Century of Robert H. Forbes: The Career of a Pioneer Agriculturist, Agronomist, Environmentalist, Conservationist and Water Specialist in Arizona and Abroad. Tucson, Ariz.: Arizona Historical Society, 1977.
MLA (9th ed.) CitationColley, Charles C., and A. Tracy Row. The Century of Robert H. Forbes: The Career of a Pioneer Agriculturist, Agronomist, Environmentalist, Conservationist and Water Specialist in Arizona and Abroad. Arizona Historical Society, 1977.
Warning: These citations may not always be 100% accurate.