Howard, Jonathan
Pustaka Utama Grafiti, 1994
Buku Teks SO
Marshall, Jock
Hodder and Stoughton, 1970
Buku Teks SO
Miller, Jonathan
Mizan, 2000
Buku Referensi
Carroll, Joseph
Oxford University Press, 2016
eBooks
Sewell, Dennis
Picador, 2010
Buku Teks SO