Yoder, Dale, author
Prentice-Hall, 1962
Buku Teks
Summers, Donald B., author
McGrw-Hill , 1981
Buku Teks
Bassett, Glenn A., author
American Management Association, Inc., 1971
Buku Teks
Lovejoy, Laurence C., author
Aleander Hamilton Institute, 1962
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1984
Buku Teks