Japan International cooperation agency, 1977
Buku Teks
edited by Robert F. Baker, L.G. Byrd and D. Grant Mickle
Van Nostrand Reinhold, 1975
Buku Referensi
E & FN spon, 1996
Buku Teks
Sehgal, S.B.
S.Chand, 1980
Buku Teks
Mannnering, Fred L.
John Wiley & Sons, [date of publication not identified]
Buku Teks