New York Harper and Brothers 1958
Buku Referensi
Tate, Audrey Patricia, 1927-
Victoria Melbourne University Press 1991
Buku Teks
Munchen Francke 1967
Buku Referensi
Koln : Bohlau Verlag, 1964
Buku Teks
Endres, Elisabeth
Frankfurt Fischer Taschenbuch verlag GmbH 1975
Buku Teks