Jeffrey Bethony, Simon Brooker, Marco Albonico, Stefan M Geiger, Alex Loukas, David Diemert, Peter J Hotez. Soil-transmitted helminth infections: ascariasis, trichuriasis, and hookworm. The Lancet. 2006, roč. 367, čís. 9521, s. 1521–1532. Dostupné online. PMID16679166.
Jeffrey Bethony, Simon Brooker, Marco Albonico, Stefan M Geiger, Alex Loukas, David Diemert, Peter J Hotez. Soil-transmitted helminth infections: ascariasis, trichuriasis, and hookworm. The Lancet. 2006, roč. 367, čís. 9521, s. 1521–1532. Dostupné online. PMID16679166.