Pole, Andy
Chapman & Hall, 1994
Buku Teks
Hinkle, Dennis E.
Houghton Mifflin, 2003
Buku Teks
Hays, William Lee, 1926-1995
Holt, Rinehart and Winston, 1973
Buku Teks
Healey, Joseph F., 1945-
Cengage Learning, 2015
Buku Teks
Healey, Joseph F., 1945-
Wadsworth, 1996
Buku Teks