(1991). Umweltspürnasen (30. - 37. Tsd.). Orac.
Chicago Style (17th ed.) CitationUmweltspürnasen. 30. - 37. Tsd. Wien [u.a.]: Orac, 1991.
MLA (9th ed.) CitationUmweltspürnasen. 30. - 37. Tsd. Orac, 1991.
Warning: These citations may not always be 100% accurate.