Kamma, Freerk Ch., author
Martinus Nijhoff, 1972
Buku Teks
Osgood, Cornelius
Charles E. Juttle, 1951
Buku Teks
edited by Donald H. Shively
Princeton University Press, 1971
Buku Teks
Newman, Philip L.
Rinehart and Winston, 1965
Buku Teks
Gupta, Moti Lal
Agam Kala Prakashan, 1982
Buku Teks