Template:Villarreal et al., 2007
- Villarreal, J.C.; Hässel de Menéndez, G.; Salazar Allen, N. 2007: Nothoceros superbus (Dendrocerotaceae), a new hornwort from Costa Rica. Bryologist 110(2): 279-285. DOI: 10.1639/0007-2745(2007)110[279:NSDANH]2.0.CO;2 JSTOR