Schollhammer, Hans
John Wiley & Sons, 1979
Buku Teks
Siropolis, Nicholas C.
Houghton Miffiln, 1977
Buku Teks
Hatten, Timothy S.
Prentice-Hall, 1997
Buku Referensi
editor, Ratih Hurriyati, Benny Tjahjono, Ade Gafar Adullah, Sulastri, Lisnawati
CRC press, 2021
eBooks
by Curtis E. Tate Jr. ... [and others]
Business Publication, 1982
Buku Teks