Verlag GmbH , 1947
Buku Referensi
Essen Stamm Verlag GmbH , 1947
Buku Referensi
Editor by Ralph D. Casey
Louisiana State University, 1963
Buku Teks
Minaturr, Joseph, author
Martinus Nijhoff, 1961
Buku Teks
Ahuja, B. N., author
Surjeet Publications , 1993
Buku Teks