Schwedt, Georg
John Wiley & Sons, 2001
Buku Teks
edited by Catherine Adams, Romina Carabott, Sam Evans
Wiley-Blackwell, 2014
Buku Teks
Manger, Jason J.
McGraw-Hill, 1995
Buku Referensi
Schwedt, Georg
John Wiley & Sons, 2001
Buku Referensi
Warbuton, Nigel
Routledge, 2004
Buku Teks