Cohn, P.M., author
John Wiley & Sons, 1982
Buku Teks
Sears, Francis W. (Francis Weston), 1898-1975, author
Addison-Wesley , 1982
Buku Teks
Suryo, author
Gajah Mada University Press, 1990
Buku Teks
edited by A.J. Marshall, W.D. Williams
Macmillan, 1978
Buku Teks
Sutanto, author
Gadjah Mada Univeraity Press, 1986
Buku Teks