Raudino, Simone
Palgrave Macmillan, 2016
Buku Teks
Kasthurirangan Gopalakrishnan, J. (Hans) van Leeuwen, Robert C. Brown, editors
[Springer, Springer], 2012
eBooks
Marcus, Edward
Bookman Associates, 1960
Buku Teks
edited by Michael M. Horowitz and Thomas M. Painter
Westview Press, 1986
Buku Teks
Ezekiel Kalipeni, Juliet Iwelunmor, Diana Grigsby-Toussaint, Imelda Moise, editors
Routledge, Taylor & Francis Group, 2018
Buku Teks