Porter, C. L. (1967). Taxonomy of flowering plants (2d ed.). W. H. Freeman.
Lua i Stíl Chicago (17ú heag.)Porter, C. L. Taxonomy of Flowering Plants. 2d ed. San Francisco: W. H. Freeman, 1967.
Lua MLA (9ú heag.)Porter, C. L. Taxonomy of Flowering Plants. 2d ed. W. H. Freeman, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.