edited by I. Grattan-Guinness
Routledge, 1994
Buku Referensi
O`Leary, De Lacy
Hill University of North Carolina Press, 1949
Buku Teks
Vrolijk, Arnoud, author
Brill, 2014
eBooks
Morris, Richard B., author
Harper & Row, 1961
Buku Teks
Martin, Michael Rheta, author
The Bobbs Merrill, 1968
Buku Referensi