edited by Donald F. Kuratko, Sherry Hoskinson
Emerald, 2017
eBooks
Curzon, L.B.
CavendishPublishing Limited, 1992
Buku Teks
Wacks, Raymond
Blackstone Press limited, 1999
Buku Teks
Suri Ratnapala
Cambridge University Press, 2009
Buku Teks
Ratnapala, Suri, 1947-
Cambridge University Press, 2017
Buku Teks