Pyle, R. (1925). How to grow roses (16th ed., rev.). The Conard-Pyle company.
Lua i Stíl Chicago (17ú heag.)Pyle, Robert. How to Grow Roses. 16th ed., rev. West Grove, Penna.: The Conard-Pyle company, 1925.
Lua MLA (8ú heag.)Pyle, Robert. How to Grow Roses. 16th ed., rev. The Conard-Pyle company, 1925.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.