edited by Malcolm R. Clarke
Clarendon Press, 1986
Buku Referensi
Edited by Anne-Sophie Darmaillacq, Ludovic Dickel, Jennifer Mather
Cambridge University Press, 2014
Buku Teks
edited by Paris Goodyear-Brown
John Wiley and Sons, 2012
Buku Teks
Kaye, Sidney
Charles C Thomas Publisher, 1961
Buku Referensi
Sage, Andrew P.
Academic Press , 1971
Buku Teks SO