Bonner W, Bonner J. The Role of Carbon Dioxide in Acid Formation by Succulent Plants. American Journal of Botany. 1948, 35 (2): 113–117. JSTOR 2437894. doi:10.2307/2437894.
Ian S. Gilman; J. Andrew C. Smith; Joseph A. M. Holtum; Rowan F. Sage; Katia Silvera; Klaus Winter; Erika J. Edwards. The CAM lineages of planet Earth. Annals of Botany. 2023-09-11, 132: 627–654. doi:10.1093/aob/mcad135.使用|accessdate=需要含有|url= (帮助)
Bonner W, Bonner J. The Role of Carbon Dioxide in Acid Formation by Succulent Plants. American Journal of Botany. 1948, 35 (2): 113–117. JSTOR 2437894. doi:10.2307/2437894.