Dougherty, P. M., & Duryea, M. L. (1990). Forest regeneration manual. Kluwer Academic.
Lua i Stíl Chicago (17ú heag.)Dougherty, Phillip M., agus Mary L. Duryea. Forest Regeneration Manual. Dordrecht: Kluwer Academic, 1990.
Lua MLA (9ú heag.)Dougherty, Phillip M., agus Mary L. Duryea. Forest Regeneration Manual. Kluwer Academic, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.