Hinkle, Charles L
Mc Graw Hill, 1975
Buku Teks
editor by Avinash Kapoor
Business Science Reference, an imprint of IGI Global,, 2014
Buku Referensi
Kurtz, David L.
The Dryden Press , 1981
Buku Teks
Alex Soemadji Nitisemito
Ghalia Indonesia, 1984
Buku Teks
Alex Soemadji Nitisemito
Ghalia Indonesia, 1984
Buku Teks