Ryals, Phillip E.; Smith-Somerville, Harriett E.; Buhse, Howard E. (2002). "Phenotype Switching in Polymorphic Tetrahymena: A Single-Cell Jekyll and Hyde". A Survey of Cell Biology. International Review of Cytology. Vol. 212. pp. 209–238. doi:10.1016/s0074-7696(01)12006-1. ISBN978-0-12-364616-3. PMID11804037.
Ryals, Phillip E.; Smith-Somerville, Harriett E.; Buhse, Howard E. (2002). "Phenotype Switching in Polymorphic Tetrahymena: A Single-Cell Jekyll and Hyde". A Survey of Cell Biology. International Review of Cytology. Vol. 212. pp. 209–238. doi:10.1016/s0074-7696(01)12006-1. ISBN978-0-12-364616-3. PMID11804037.
Martin, Teresa Dianne (1996). Analysis of ubiquitin and differential gene expression during differentiation in Tetrahymena vorax (Thesis). ProQuest304234889.