Townsend, Charles Haskins. Birds collected in Lower California(PDF). Bulletin of the American Museum of Natural History. 1923, 48: 1–25 [2009-01-09]. (原始内容存档(PDF)于2007-07-20).
Townsend, Charles Haskins. Birds collected in Lower California(PDF). Bulletin of the American Museum of Natural History. 1923, 48: 1–25 [2009-01-09]. (原始内容存档(PDF)于2007-07-20).