Kaplan, Robert D., author
Random House, 2000
Buku Teks
Kaplan, Robert D., author
Caroline Cunningham, 2000
Buku Teks
Walz, Jay, author
Atheneum, 1966
Buku Teks
Walker, Allan S., author
Australian War Memorial, 1956
Buku Teks
Palmer, Monte, author
Thomson Wadsworth, 2007
Buku Teks