Askin, J. A. (1967). A Symposium on the child: Selected essays presented on the occassion of the seventy-fifth Anniversary of the Johns Hopkins Hospital and the Dedication of the childrens medical and surgical center, May 14-15, 1964. Johns Hopkins Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAskin, John A. A Symposium on the Child: Selected Essays Presented on the Occassion of the Seventy-fifth Anniversary of the Johns Hopkins Hospital and the Dedication of the Childrens Medical and Surgical Center, May 14-15, 1964. Baltimore: Johns Hopkins Press, 1967.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিAskin, John A. A Symposium on the Child: Selected Essays Presented on the Occassion of the Seventy-fifth Anniversary of the Johns Hopkins Hospital and the Dedication of the Childrens Medical and Surgical Center, May 14-15, 1964. Johns Hopkins Press, 1967.