Wilcox, Charles F., 1930-, author
Prentice-Hall, 1995
Buku Teks
Helmi Fauzan Abdillah, author
Pusat Penelitian dan Pengabdian Pada Masyarakat (P3M) STTA, 2022
Artikel Jurnal
Dannley, Ralph L., author
Macmillan, 1968
Buku Teks
Fishel, Derry L., author
Macmillan, 1971
Buku Teks
Doyle, Michael P., author
John Wiley & Sons, 1980
Buku Teks