Cambridge University Press, 2005
eBooks
Giegerich, Heinz J.
Cambridge University Press, 1995
Buku Teks SO
Mohanan, K.P.
D. Reidel, 1986
Buku Teks
Yavas, Mehmet S.
Blackwell Publishing, 2006
Buku Teks SO
Anceaux, Johannes Cornelis, 1920-
Martinus Nijhoff, 1965
Buku Teks SO