Ovidiu Nicolescu, Lester lloyd-Reason
World Scientific Publishing Co., 2015
Buku Teks
edited by David I. Cleland, Roland Gareis
McGraw-Hill, 1994
Buku Referensi
Lane, Henry W., 1942-, author
Blackwell, 1997
Buku Teks
Deresky, Helen
Prentice-Hall, 2000
Buku Teks
Lucas, Chester L.
McGraw-Hill, 1986
Buku Teks