edited by Charles R. Dechert
A. Clarion book, 1966
Buku Teks SO
Ashby, W. Ross, author
Chapman and Hall , 1973
Buku Teks SO
Sommer, Bobbe, author
Prentice-Hall, 1993
Buku Teks
Bell, D.A., author
Blaisdell Publ. Comp., 1964
Buku Teks SO
Beer, Stafford, author
English University Press, 1973
Buku Teks