Não informado. (1936). Philips Technical Review. Philips Research Laboratories.
Lua i Stíl Chicago (17ú heag.)Não informado. Philips Technical Review. Eindhoven, Holanda: Philips Research Laboratories, 1936.
Lua MLA (8ú heag.)Não informado. Philips Technical Review. Philips Research Laboratories, 1936.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.