Krombholz, M. G. (2009). A pictorial reference guide for German Chinas.
Lua i Stíl Chicago (17ú heag.)Krombholz, Mary Gorham. A Pictorial Reference Guide for German Chinas. Nashville, TN, 2009.
Lua MLA (8ú heag.)Krombholz, Mary Gorham. A Pictorial Reference Guide for German Chinas. 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.