Felger, Richard & Moser, Mary B. (1985). People of the desert and sea: ethnobotany of the Seri Indians. University of Arizona Press, Tucson.KB1 bakım: Birden fazla ad: yazar listesi (link)
Innes, C. & Wall, B. (1995). Cacti, Succulents and Bromaliads. Cassell & The Royal Horticultural Society.KB1 bakım: Birden fazla ad: yazar listesi (link) .