Não informado. (1926). Bulletin. American Society of Plant Physiologists.
Lua i Stíl Chicago (17ú heag.)Não informado. Bulletin. Lancaster, Pa: American Society of Plant Physiologists, 1926.
Lua MLA (8ú heag.)Não informado. Bulletin. American Society of Plant Physiologists, 1926.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.