Merrick, Dave
Routledge, 1996
Buku Teks
Yusuf Ali Marsaoly, author
2001
UI - Tesis (Membership)
Drisko, James W., author
Springer, 2012
eBooks
Cohen, Nathan Edward, author
National Ass. of Workker, 1964
Buku Teks
Brieland, Donald, author
McGraw-Hill, 1975
Buku Teks