Bold, H. C. (1964). The plant kingdom (2nd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Bold, Harold Charles. The Plant Kingdom. 2nd ed. Englewood: Prentice-Hall, 1964.
Lua MLA (9ú heag.)Bold, Harold Charles. The Plant Kingdom. 2nd ed. Prentice-Hall, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.