Crockett, J. U. (1971). Pelouses et plantes couvre-sol. Time-Life.
Lua i Stíl Chicago (17ú heag.)Crockett, James Underwood. Pelouses Et Plantes Couvre-sol. Time-Life, 1971.
Lua MLA (9ú heag.)Crockett, James Underwood. Pelouses Et Plantes Couvre-sol. Time-Life, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.