El-Sayed, Abdulrahman M., author
Oxford University Press, 2017
eBooks
edited by Snehendu B. Kar, Rina Alcalay
Sage, 2000
Buku Teks
Jaco, E. Gartly
Free Press, 1972
Buku Teks
Radley, Alan
Thousand Oaks Sage , 1994
Buku Teks
MacLachlan, Malcolm, author
Open University Press, 2004
Buku Teks