VanderWerf, Eric A.; Wiles, Gary J.; Marshall, Ann P. & Knecht, Melia (2006): Observations of migrants and other birds in Palau, April-May 2005, including the first Micronesian record of a Richard's Pipit. Micronesica39(1): 11-29. PDF fulltextArkiverad 13 februari 2012 hämtat från the Wayback Machine.
Wiles, Gary J.; Worthington, David J.; Beck, Robert E. Jr.; Pratt, H. Douglas; Aguon, Celestino F. & Pyle, Robert L. (2000): Noteworthy Bird Records for Micronesia, with a Summary of Raptor Sightings in the Mariana Islands, 1988-1999. Micronesica32(2): 257-284. PDF fulltextArkiverad 23 april 2013 hämtat från the Wayback Machine.
Wiles, Gary J.; Johnson, Nathan C.; de Cruz, Justine B.; Dutson, Guy; Camacho, Vicente A.; Kepler, Angela Kay; Vice, Daniel S.; Garrett, Kimball L.; Kessler, Curt C. & Pratt, H. Douglas (2004): New and Noteworthy Bird Records for Micronesia, 1986–2003. Micronesica37(1): 69-96. HTML abstractArkiverad 5 maj 2009 hämtat från the Wayback Machine.
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VanderWerf, Eric A.; Wiles, Gary J.; Marshall, Ann P. & Knecht, Melia (2006): Observations of migrants and other birds in Palau, April-May 2005, including the first Micronesian record of a Richard's Pipit. Micronesica39(1): 11-29. PDF fulltextArkiverad 13 februari 2012 hämtat från the Wayback Machine.
Wiles, Gary J.; Worthington, David J.; Beck, Robert E. Jr.; Pratt, H. Douglas; Aguon, Celestino F. & Pyle, Robert L. (2000): Noteworthy Bird Records for Micronesia, with a Summary of Raptor Sightings in the Mariana Islands, 1988-1999. Micronesica32(2): 257-284. PDF fulltextArkiverad 23 april 2013 hämtat från the Wayback Machine.
Wiles, Gary J.; Johnson, Nathan C.; de Cruz, Justine B.; Dutson, Guy; Camacho, Vicente A.; Kepler, Angela Kay; Vice, Daniel S.; Garrett, Kimball L.; Kessler, Curt C. & Pratt, H. Douglas (2004): New and Noteworthy Bird Records for Micronesia, 1986–2003. Micronesica37(1): 69-96. HTML abstractArkiverad 5 maj 2009 hämtat från the Wayback Machine.