Lua APA (7ú heag.)

Raabe, H. J., & Koetzle, H. (2014). 990 faces: 241-270 ; Brandenburg-Gate x Hans Jürgen Raabe. Meralon International LtD..

Lua i Stíl Chicago (17ú heag.)

Raabe, Hans Jürgen, agus Hans-Michael Koetzle. 990 Faces: 241-270 ; Brandenburg-Gate X Hans Jürgen Raabe. Ilford, Essex: Meralon International LtD., 2014.

Lua MLA (8ú heag.)

Raabe, Hans Jürgen, agus Hans-Michael Koetzle. 990 Faces: 241-270 ; Brandenburg-Gate X Hans Jürgen Raabe. Meralon International LtD., 2014.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.