Feddersen, E., Lüdtke, I., & Braun, H. (2009). Living for the elderly: A design manual. Boston : Birkhäuser.
Lua i Stíl Chicago (17ú heag.)Feddersen, Eckhard, Insa Lüdtke, agus Helmut Braun. Living for the Elderly: A Design Manual. Basel: Boston : Birkhäuser, 2009.
Lua MLA (9ú heag.)Feddersen, Eckhard, et al. Living for the Elderly: A Design Manual. Boston : Birkhäuser, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.