↑ Eckert J. (2005). "Helminths". In Kayser, F.H.; Bienz, K.A.; Eckert, J.; Zinkernagel, R.M. Medical Microbiology. Stuttgart: Thieme. pp. 560–562. ISBN9781588902450.
↑ Somers, Kenneth D.; Morse, Stephen A. (2010). Lange Microbiology and Infectious Diseases Flash Cards (2nd ed.). New York: Lange Medical Books/ McGraw-Hill. pp. 184–186. ISBN9780071628792.
↑ Bogitsh, Burton J.; Carter, Clint E. (2013). Human Parasitology (4th ed.). Amsterdam: Academic Press. pp. 244–245. ISBN9780124159150.
↑ Winn, Jr. Washington; Allen, Stephen; Janda, William; Koneman, Elmer; Procop, Gary; Schreckenberger, Paul; Woods, Gail (2006). Koneman's Color Atlas and Textbook of Diagnostic Microbiology (6th ed.). Philadelphia: Lippincott Williams & Wilkins. pp. 1282–1284. ISBN9780781730143.
