Chirac, Jaques
[Publisher not identified], 1996
Buku Teks SO
Mager, N.H.
William Morrow and Co., 1982
Buku Referensi
Gowans, Alan
University of Toronto Press, 1955
Buku Teks SO
Brogan, D.W. (Denis William)
Time, 1960
Buku Teks
Funk & Wagnalls, 2000,
Buku Referensi