Barry Lee, editor
Continuum International Pub. Group, 2011
Buku Teks SO
Siobhan Chapman
Oxford University Press, 2005
Buku Teks
Gomperz, Theodor, author
John Murray, 1949
Buku Teks
Gomperz, Theodor, author
John Murray , 1955
Buku Teks
Gomperz, Theodor, author
John Murray, 1931
Buku Teks