Johnson, B.L.C., author
Barnes & Noble, 1971
Buku Teks
Le May, Reginald
George Allen and Unwin, 1954
Buku Teks
Konark Publishers in association with India International Centre, 1996
Buku Teks
Raghavan, Srinath, author
Basic Books, a member of the Perseus Books Group, 2016
Buku Teks
Clyde, Paul H. (Paul Hibbert), author
Prentice-Hall, 1948
Buku Teks