Konrad-Adenauer-Stiftung, Thesing, J., & Hofmeister, W. (1996). Environmental protection as an element of order policy. Konrad-Adenauer-Stiftung.
Chicago Style aipamenaKonrad-Adenauer-Stiftung, Josef Thesing, and Wilhelm Hofmeister. Environmental Protection as an Element of Order Policy. Sankt Augustin: Konrad-Adenauer-Stiftung, 1996.
MLA aipamenaKonrad-Adenauer-Stiftung, et al. Environmental Protection as an Element of Order Policy. Konrad-Adenauer-Stiftung, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.