Boies, David
Little,Brown and Company, 1977
Buku Teks
Boies, David.
Little, Brown, 1977
Buku Teks
Presser, Stephen B., author
Thomson/West, 2010
Buku Teks
Swan, John
Emond Montgomery Publications Limited, 1985
Buku Teks
Williamson, J. Peter (John Peter), author
Scott, Foresman, 1968
Buku Teks