edited by Joanne E. Hall, Barbara R. Weaver
J.B. Lippincott , 1977
Buku Teks
Atkinson, Leslie D.
Macmillan, 1985
Buku Teks
edited by Harriet H. Werley
Springer, 1981
Buku Teks SO
Hare, Van Court
Harcourt, Brace and World, 1967
Buku Teks
Arrigo, Bruce A.
Pearson/Prentice Hall, 2006
Buku Teks