Mandal, A. K. “Studies on Some Aspects of Avian Coccidia (Protozoa, Sporozoa). Part IV. Occurrence and Distribution of Coccidian Parasites in Indian Birds”. Records of the Zoological Survey of India, vol. 63, no. 1-4, Dec. 1965, pp. 23-39, doi:10.26515/rzsi/v63/i1-4/1965/161557.