- Greene, Robert A. “The Composition and Uses of the Fruit of the Giant Cactus (Carnegiea Gigantea) and Its Products.” Journal of Chemical Education 13.7 (1936): 309.
- Jan G. Bruhn. “Carnegiea gigantea: The Saguaro and Its Uses.” Economic Botany 25, no. 3 (1971): 320-29.
- Alun Salt, Cacti Thrive in the Shadows of Catastrophes, Botany One
- Susan E. Meyer, Carnegiea gigantea (Engelm.) Britton & Rose saguaro or giant cactus, In: Bonner, Franklin T.; Karrfalt, Robert P., eds. The Woody Plant Seed Manual. Agric. Handbook No. 727. Washington, DC. U.S. Department of Agriculture, Forest Service. p. 324-325.
- Various papers at Science.gov, the US Federal Science portal
- McGregor, S. E., Stanley M. Alcorn, and George Olin. “Pollination and Pollinating Agents of the Saguaro.” Ecology 43, no. 2 (1962): 259-67.
See full list of Individual Species References.
Please also refer to the General Bibliography and Online Resources.