Chandavarkar, Anand G.
St. Martin`s Press, 1996
Buku Teks
Thorne, W.J.
Oxford University Press , 1948
Buku Teks
Bradford, Frederick A.
Longmans, Green, 1932
Buku Teks
Rodgers, Raymond
Alexander Hamiltion Institute, 1962
Buku Teks
Timberlake, Richard H.
N.Y. Harper & Row , 1965
Buku Teks