Somerville, George
Taylor and Francis, 2008
Buku Teks
Carmen Andrade, Joost Gulikers, editors
[Springer, Springer], 2012
eBooks
Carmen Andrade, Joost Gulikers, Elisabeth Marie-Victoire, editors
Springer Nature, 2019
eBooks
Alexander, Michael
2001
UI - Skripsi (Membership)
Balaguru, Perumalsamy N.
Taylor &Fransic, 2009
Buku Teks