Artikel Jurnal
Hoebel, E. Adamson, author
Harvard University Press, 1967
Buku Teks
Hoebel, E. Adamson, author
Atheneum, 1970
Buku Teks
edited by V.A.C. Gatrell, Bruce Lenman, and Geoffrey Parker
Europa Publications, 1980
Buku Referensi
edited by Johannes Dragsbaek Schmidt, Jacques Hersh; Niels Fold
Longman, , 1997
Buku Teks