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.
Lua i Stíl Chicago (17ú heag.)Askin, 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.
Lua MLA (9ú heag.)Askin, 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.