edited by Natalie Klein
Cambridge University Press, 2014
Buku Teks
edited by Marion Jansen, Joost Pauwelyn and Theresa Carpenter
Cambridge University Press, 2017
Buku Teks
Cambridge University Press, 2017
eBooks
1982
Buku Referensi
Westwood, John
Donnington Press , 1971
Buku Teks