* , P. A. D., , R. F.، ، S. & ، Ian (1988) "Birds of the Middle East and North Africa", T & AD Poyser, Calton، England.
*Hollom, P. A. D., Porter, R. F., Christensen, S. & Willis, Ian (1988) "Birds of the Middle East and North Africa", T & AD Poyser, Calton, England.