Freeman, Harry M.
McGraw-Hill, [1995;1995, 1995]
Buku Referensi
Freeman, Harry M.
McGraw-Hill, 1995
Buku Referensi
Harrison, Roy M.
Whitstable Litho, 1982
Buku Teks
edited by Michael F. Wood, John A. King, Nicholas P. Cheremisinoff
Noyes Publications, 1997
Buku Referensi
Harvest House, 1968
Buku Teks