Wooffitt, Robin
Sage , 2014
Buku Teks
Asia-Pacific Centre of Education for International Understanding
APCEIU. SEAMO, SEAMO INNOTECH, and SEAMO SPAFA, 2010
Buku Referensi
Koleksi Publik
Lawrence, David Herbert, 1885-1930
London Macmillan 1948
Buku Teks
Cook, Guy W.D.
Oxford University Press , 1993
Buku Teks