Edberg, Mark Cameron, 1955-, author
Jones and Bartlett, 2007
Buku Teks
Routledge & Kegan Paul, 1996
Buku Teks
Howe, David
Wild House, 1987
Buku Teks
Dubois, Brenda, 1949-, author
Allyn and Boston, 1992
Buku Teks
Healey, Joseph F., 1945-, author
Cengage Learning, 2016
Buku Teks