Hayward, Susan
Routledge, 1996
Buku Teks SO
Hayward, Susan
Routledge, 2006
Buku Referensi
Hayward, Susan
Routledge, 2006
Buku Teks SO
Departemen Pendidikan dan Kebudayaan
Jakarta Ministry of Education and Culture, Republic of Indonesia, 2012
Buku Teks SO
London : Routledge
Majalah, Jurnal, Buletin