David, Kingley, author
Rinehart, 1951
Buku Teks
penerjemah: Hermoyo, Masri Maris
Yayasan Obor Indonesia, 1994
Buku Teks
Bennis, Warren G., author
Harper and Row, 1968
Buku Teks
Edward, Richard C., author
Prentice-Hall, 1972
Buku Teks
Biesanz, John
Prentice-Hall, 1964
Buku Teks