by Barbara Allen Babcock [and others]
Little, Brown, 1975
Buku Teks
J. Ralph Lindgren ... [et al.].
Thomson Wadsworth, 2005
Buku Teks
Peyton, Daniel
Blackstone Press limited, 1997
Buku Teks
Ginsburg, Ruth Bader, author
West Publishing, 1978
Buku Teks
Olga Aikin
IPM, 1994
Buku Teks