Bergen, J. Y., & Caldwell, O. W. (1911). Practical botany. Ginn and Company.
Lua i Stíl Chicago (17ú heag.)Bergen, Joseph Y., agus Otis W. Caldwell. Practical Botany. Boston : New York [etc.]: Ginn and Company, 1911.
Lua MLA (8ú heag.)Bergen, Joseph Y., agus Otis W. Caldwell. Practical Botany. Ginn and Company, 1911.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.