Smith, Stanley D.; Monson, Russell K.; Anderson, Jay E. (1997), "Poikilohydric Plants", Physiological Ecology of North American Desert Plants, Adaptations of Desert Organisms, Berlin, Heidelberg: Springer Berlin Heidelberg, pp. 191–198, doi:10.1007/978-3-642-59212-6_10, ISBN978-3-642-63900-5, retrieved 2022-06-01
Smith, Stanley D.; Monson, Russell K.; Anderson, Jay E. (1997), "Poikilohydric Plants", Physiological Ecology of North American Desert Plants, Adaptations of Desert Organisms, Berlin, Heidelberg: Springer Berlin Heidelberg, pp. 191–198, doi:10.1007/978-3-642-59212-6_10, ISBN978-3-642-63900-5, retrieved 2022-06-01