Shaw, Alan George Lewers
Faber and Faber, 1955
Buku Teks
edited by Wolfgang Schneider, Ruth Hengsteler, B. Sodian
Lawrence Erlbaum Assossiates, 2004
Buku Teks
Hildebrand, Verna
Macmillan, 1985
Buku Teks
Isbell, Rebecca T.
Wadsworth and Cengage Learning, 2013
Buku Teks
photographed and edited by H. Edward Kim
Hyung Mun, 1981
Buku Teks