Kathryn Rountree, Christine Morris, Alan A.D. Peatfield, editor
[Springer, ], 2012
eBooks
Timothy Insoll
Routledge, 2001
Buku Teks
Marcy Rockman, Joe Flatman, editor
[Springer, Springer], 2012
eBooks
edited by Mari Pritchard Parker, Elvio Angeloni
McGraw-Hill, 2013
Buku Teks
SPAFA, 1984
Buku Referensi