by Jack Bavington
Maclean-Hunter Learning Materials, 1976
Buku Teks
Ottawa Departemen of External Affairs 1963
Buku Teks
edited by John Robert Colombo
Hurtig Publishers, 1978
Buku Teks
Creighton, Donald, author
Macmillan, 1959
Buku Teks
Creighton, Donald, author
Macmillan, 1981
Buku Teks