edited by Istvan Batori, Winfried Lenders, Wolfgang Putschke
Walter de Gruyter, 1989
Buku Referensi
Marion, Jerry B., author
Saunders, 1972
Buku Teks
World Scientific, 2014
Buku Teks
World Scientific , 2014
Buku Teks
Hellwig, Gunter
Addison-Wesley , 1964
Buku Teks