Sauerbruch, H. (1998). Wer Wann Was Wie Wo: Monika Hubbauer, Rainer Hahn, Anette Frey. TÜV Süddeutschland.
Citazione stile Chigago Style (17a edizione)Sauerbruch, Horst. Wer Wann Was Wie Wo: Monika Hubbauer, Rainer Hahn, Anette Frey. München: TÜV Süddeutschland, 1998.
Citatione MLA (8a ed.)Sauerbruch, Horst. Wer Wann Was Wie Wo: Monika Hubbauer, Rainer Hahn, Anette Frey. TÜV Süddeutschland, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.