[Sivinski R. C., McDonald C., Knowlton’s cactus (Pediocactus knowltonii): Eighteen years of monitoring and recovery actions, Southwestern rare and endangered plants: Proceedings of the Fourth Conference; March 22–26, 2004; Las Cruces, New Mexico, USDA Forest Service, Rocky Mountain Research Station, Fort Collins, Colorado, 2007, s. 98–107, seria Proceedings RMRS-P-48CD]
Multi-year monitoring of Pediocactus knowltonii and population restoration measures. The authors describe the fates of vegetatively propagated plants transplanted into similar habitats and the slow emergence of a new generation from seeds.