Weatherwax, P. (1956). Botany (3rd ed.). W. B. Saunders.
Lua i Stíl Chicago (17ú heag.)Weatherwax, Paul. Botany. 3rd ed. Philadelphia: W. B. Saunders, 1956.
Lua MLA (9ú heag.)Weatherwax, Paul. Botany. 3rd ed. W. B. Saunders, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.