Gibbons, A. (2016). Olaf Nicolai / Alexandra Heimes: No. 1.
Lua i Stíl Chicago (17ú heag.)Gibbons, Adam. Olaf Nicolai / Alexandra Heimes: No. 1. Leipzig, 2016.
Lua MLA (8ú heag.)Gibbons, Adam. Olaf Nicolai / Alexandra Heimes: No. 1. 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.