Scott, C. R.
Applied Science Publishers Ltd, 1974
Buku Teks
Atkinson, John, author
McGraw-Hill, 1993
Buku Teks
Punmia, B.C., author
Standard Book House, 1981
Buku Teks
Buhdhu, Muni, author
John Wiley & Sons, 2011
Buku Teks
Tschebotarioff, Gregory P., author
McGraw-Hill, 1951
Buku Teks