editor in chief, Stanley I. Kutler
Charles Scribner's Sons, 1996
Buku Referensi
Souter, Gerry, author
Andre Deutsch, 2015
Buku Referensi
Bodard, Lucien, author
Atlantic Monthly Press Book, 1967
Buku Teks
Moyar, Mark, author
Cambridge University Press, 2006
Buku Teks
Knoebl, Kuno
Frederick A. Praeger , 1967
Buku Teks