Friedländer, M. J., & Braam, F. A. v. (1950). World collectors annuary. Brouwer.
Lua i Stíl Chicago (17ú heag.)Friedländer, Max J., agus Fred A. von Braam. World Collectors Annuary. Delft: Brouwer, 1950.
Lua MLA (8ú heag.)Friedländer, Max J., agus Fred A. von Braam. World Collectors Annuary. Brouwer, 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.