Não informado. (1938). Chemical processing. Putman Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Chemical Processing. Chicago, Ill: Putman Publishing, 1938.
Lua MLA (8ú heag.)Não informado. Chemical Processing. Putman Publishing, 1938.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.