Wessels, Charlyn
Oxford University Press, 1991
Buku Teks
Song, Shuhong
China International Press, 2011
Buku Teks
Gianakaris, C.J.
Houghton Miffiln, 1975
Buku Teks
Veltrusky, Jiri
Peter de Ridder Press, 1977
Buku Teks
Leeming, Glenda
Macmillan, 1989
Buku Teks