Didier, E. S.;Stovall, M. E.;Green, L. C.;Brindley, P. J.;Sestak, K.Veterinary Parasitology,126,1–2,9 desembre 2004,p.145–166. DOI: 10.1016/j.vetpar.2004.09.006. PMID: 15567583.
Didier, E. S.;Stovall, M. E.;Green, L. C.;Brindley, P. J.;Sestak, K.Veterinary Parasitology,126,1–2,9 desembre 2004,p.145–166. DOI: 10.1016/j.vetpar.2004.09.006. PMID: 15567583.
Nickrent, Daniel L.«Parasitic Plants of the World»,2002. Arxivat de l'original el 6 març 2016.[Consulta: 10 abril 2018]. which appeared in Spanish as Chapter 2, p. 7–27 in: J. A. López-Sáez, P. Catalán and L. Sáez [eds.], Parasitic Plants of the Iberian Peninsula and Balearic Islands.
Nickrent, Daniel L.«Parasitic Plants of the World»,2002. Arxivat de l'original el 6 març 2016.[Consulta: 10 abril 2018]. which appeared in Spanish as Chapter 2, p. 7–27 in: J. A. López-Sáez, P. Catalán and L. Sáez [eds.], Parasitic Plants of the Iberian Peninsula and Balearic Islands.