editor S.R. Epton; R.L. Payne dan A.W. Pearson; Penyunting Lili Rasjidi
Remaja Rosdakarya, 1991
Buku Teks
Howard, Keith
MCB University Press, 1990
Buku Referensi
Gibson, John E.
John Wiley & Sons, 1981
Buku Teks
Haenssgen, Marco J.
Emerald Publishing Limited, 2019
eBooks
Zikmund, William G.
The Dryden Press , 1991
Buku Teks