by C. von Bar [and others]; edited by J. Spier
Kluwer, 1996
Buku Teks
Barrow, John D., author
Oxford University Press , 1998
Buku Teks
Berliner, Baruch, author
Prentice-Hall, 1982
Buku Teks
Krishnamurti, J. (Jiddu), 1895-1986, author
New York Routledge , 1999
Buku Teks
by Mandy Swann [and others]
McGraw-Hill, 2012
Buku Teks