Phillips, G.D.R.
Frederick Muller, 1942
Buku Teks
McCormick, Frederick, 1870-, author
Little, Brown, 1917
Buku Teks
Lensen, George Alexander, author
Sophia University, 1970
Buku Teks
Vishwanathan, Savitri, author
Diplomatic Press, 1973
Buku Teks
Nollau, Gùˆnther, 1911-1991, author
Frederick A. Praeger, 1963
Buku Teks