Gruson, E. S. (1976). Checklist of the birds of the world: A complete list of the species, with names, authorities and ar. CUP.
استشهاد بنمط شيكاغوGruson, Edward S. Checklist of the Birds of the World: A Complete List of the Species, with Names, Authorities and Ar. CUP, 1976.
MLA استشهادGruson, Edward S. Checklist of the Birds of the World: A Complete List of the Species, with Names, Authorities and Ar. CUP, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.