Brickell, C., & Joyce, D. (2006). The Royal Horticultural Society pruning & training (Paperback ed.). DK.
Lua i Stíl Chicago (17ú heag.)Brickell, Christopher, agus David Joyce. The Royal Horticultural Society Pruning & Training. Paperback ed. London: DK, 2006.
Lua MLA (9ú heag.)Brickell, Christopher, agus David Joyce. The Royal Horticultural Society Pruning & Training. Paperback ed. DK, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.