(1911). Permanent pasture grasses.
Lua i Stíl Chicago (17ú heag.)Permanent Pasture Grasses. 1911.
Lua MLA (9ú heag.)Permanent Pasture Grasses. 1911.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)
