Bergel, Egon Ernest, author
McGraw-Hill, 1955
Buku Teks
Berry, Brian J.L., author
Prentice-Hall, 1970
Buku Teks
Black, Christopher F., author
Routledge, 2001
Buku Teks
edited by D. T. Herbert and R. J. Johnston
John Wiley & Sons, 1981
Buku Teks
Northam, Ray M., author
John Wiley & Sons, 1979
Buku Teks