Bernthal, John E creator Nicholas W Bankson, Peter Flipsen text New York Pearson 2009 6th monographic xii, 468p.: ill,; 24cmx18cm 9780205569267 https://books.google.com.pk/books?id=j_UmKAAACAAJ&dq=9780205569267&hl=en&sa=X&ved=0ahUKEwj2s6jjlt_bAhVI1RQKHSzNDEEQ6AEIJDAA https://books.google.com.pk/books?id=j_UmKAAACAAJ&dq=9780205569267&hl=en&sa=X&ved=0ahUKEwj2s6jjlt_bAhVI1RQKHSzNDEEQ6AEIJDAA 20260128043003.0