Check-list of North American birds / 
prepared by a Committee of the American Ornithologists' Union. 
 - FIFTH EDITION 
 - Baltimore, MD :  American Ornithologists' Union,  1957. 
 - ix, 691 p. ;  24 cm. 
<br/><br/><br/>Inglés 
<br/><br/><label>LCCN: </label>84178617  
<br/><br/><label>Subjects--Index Terms: </label>Birds Aves 
<br/><br/><label>Dewey Class. No.: </label>598.097