Davison, Frank Dalby, 1983-1970, author
Angus & Robertson, 1979
Buku Teks
Shaw, Alan George Lewers, author
Faber and Faber, 1955
Buku Teks
edited by Wolfgang Schneider, Ruth Hengsteler, B. Sodian
Lawrence Erlbaum Assossiates, 2004
Buku Teks
Hildebrand, Verna, author
Macmillan, 1985
Buku Teks
Isbell, Rebecca T., author
Wadsworth and Cengage Learning, 2013
Buku Teks