Zomlefer, W. B. (1994). Guide to flowering plant families. University of North Carolina Press.
Lua i Stíl Chicago (17ú heag.)Zomlefer, Wendy B. Guide to Flowering Plant Families. Chapel Hill: University of North Carolina Press, 1994.
Lua MLA (9ú heag.)Zomlefer, Wendy B. Guide to Flowering Plant Families. University of North Carolina Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.