Ertl, G., & Kuppers, J. (1974). Low energy electrons and surface chemistry. Verlag Chemie.
Lua i Stíl Chicago (17ú heag.)Ertl, G., agus J. Kuppers. Low Energy Electrons and Surface Chemistry. Weinheim: Verlag Chemie, 1974.
Lua MLA (9ú heag.)Ertl, G., agus J. Kuppers. Low Energy Electrons and Surface Chemistry. Verlag Chemie, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.