Lang, James M., author
Harvard University Press , 2013
Buku Teks
Czerniawski, Gerry, author
Open University Press, 2013
Buku Teks
Syed, Khalida Tanvir, author
[, Sense], 2012
eBooks
Maxel, Okoche John Michael, author
LAP Lamber Academic Publishing , 2015
Buku Teks
Belle Wallace, Dorothy A. Sisk, John Senior, editor
Sage, 2019
Buku Teks