Rivers-Smith, S., author
Oxford University Press, 1951
Buku Teks
Rivers-Smith, S., author
Oxford University Press, 1949
Buku Teks
edited by Clarence L. Barnhart and Robert K. Barnhart
World Book-Childcraft International, 1978
Buku Referensi
French, F. G., author
Oxford University Press, 1947
Buku Teks
McKay, Herbert
Oxford University Press, 1950
Buku Teks