Reilley, Charles N.
McGraw-Hill, 1961
Buku Referensi
Ewing, Galen W. (Galen Wood), author
McGraw-Hill, 1960
Buku Teks
edited by J.R.J. Pare and J.M.R. Belanger
Elsevier, 1997
Buku Teks
Jain, Surender Kumar, author
Vikas Publishing House PVT LTD, 1982
Buku Teks
Artikel Jurnal