editor, Wolfgang Kruse
Press and Information Office of Land Berlin, 1979
Buku Teks SO
Berlin, Normand
Macmillan Education, 1988
Buku Teks SO
Wanrau, Gerhard
Berlin Henschel verlag 1957
Buku Teks
Wanrau, Gerhard
Berlin Henschel verlag 1957
Buku Teks
Parasti Fatima Azahra
2020
UI - Makalah dan Kertas Kerja