Tiersky, Ronald, author
Wadsworth, 1993
Buku Teks
Chirac, Jaques, author
[Publisher not identified], 1996
Buku Teks
Mager, N.H., author
William Morrow and Co., 1982
Buku Referensi
Gowans, Alan
University of Toronto Press, 1955
Buku Teks
Brogan, D.W. (Denis William), author
Time, 1960
Buku Teks