Johnson, Richard E.
Reading, Mass. Addison-Wesley c.1962,
Buku Teks
Gill, John
Paul Chapman Publishing, Inc, 1991
Buku Teks
Johnson, Debra, author
Routledge, Taylor & Francis group, 2003
Buku Teks
Johnson, Sidney M., author
McGraw-Hill, 1968
Buku Teks
Johson, Jean
Bedford Books, 1987
Buku Teks