BioStor
 | In: Ferrari-Perez: Catalogue of animals collected by the geographical and exploring commission of the Republic of Mexico. [Part III. Reptiles and Amphibians, pp. 182-199] E D Cope (1886) Proc. US Natl. Mus 9: 125-199 |
 | A Synopsis of the Genus Psaltriparus Harry C Oberholser (1903) The Auk 20: 198-201 |