Gaya APA

Joehnk, P., Jonhnk, C, K. (2009). Raum.Werte.Creating Hospitality Design . : Braun Publishing.

Gaya MLA

Joehnk, Peter., Jonhnk, Corinna, Kretschmar. "Raum.Werte.Creating Hospitality Design". : Braun Publishing, 2009. Buku.