Ocioszynski, Tadeusz, author
Polonia Pub. House , 1960
Buku Teks
Januszkiewicz, Franciszek, author
Interpress Publishers, 1973
Buku Teks
Artikel Jurnal
Foreign office of the federal Republic of Germany , 1982
Buku Teks
Rozmaryn, Stefan, author
Polonia Publishing House , 1958
Buku Teks