Kakonis, Tom E.
McGraw-Hill, 1978
Buku Teks
Sklare, Arnold B., author
McGraw-Hill, 1964
Buku Teks
Waldo, Willis H., author
Van Nostrand Reinhold, 1960
Koleksi Publik
Netzley, Michael, author
Prentice-Hall, 2001
Buku Teks
Bogg, Daisy, author
McGraw-Hill, 2012
Buku Teks