Jorgensen, Finn
The McGraw-Hill Companies, 1996
Buku Referensi
editors-in-chief, David M. Grant, Robin K. Harris
John Wiley & Sons, 1996
Buku Referensi
Michele J. Gelfand, Chi-yue Chiu, and Ying-yi Hong, editors
Oxford University Press, 2016
eBooks
Niazi, Sarfaraz K
Informa Healthcare USA , 2009
Buku Referensi
Moorjani, K.
Elsevier, 1984
Buku Teks