Whitmore, Robert C.; Whitmore, R. Craig; and Whitmore, Michael M.
"Distributional notes on the Mangrove Warbler (Dendroica petechia castaneiceps) near the northern edge of its range in eastern Baja California Sur, Mexico,"
Western North American Naturalist: Vol. 60
, Article 15.
Available at: http://scholarsarchive.byu.edu/wnan/vol60/iss2/15