Handbook of the birds of India and Pakistan : together with those of Bangladesh, Nepal, Sikkim, Bhutan and Sri Lanka. Volume 8, Wablers to redstarts / Sálim Ali and S. Dillon Ripley ; with contributions by T. J. Roberts.    New Delhi :  Oxford University Press,  1997 . xii, 281 s., [15] s. obr. příl.