Baerwald, Friedrich
Fordham University Press, 1960
Buku Klasik
edited by Daniel M. Hausman ... [and others]
Cambridge University Press, 1994
Buku Teks
Cambridge University Press , 2008
Buku Teks
Viale, Riccardo
Springer, 2012
eBooks
edited by Luca Fiorito, Scott Scheall, Carlos Eduardo Suprinyak
Emerald, 2016
eBooks