editor L. Mary Barker
A & F Pears , 1949
Buku Referensi
edited by Frank N. Magill
Harper & Brothers, 1958
Buku Referensi
Little, Charles E.
Gale Research Company, 1967
Buku Referensi
Roberts, Kate Louise, compiler
Grosset and Dunlap , 1940
Buku Referensi
Dodd, Mead & Company, 1956
Buku Referensi