Heslop-Harrison, J. (1953). New concepts in flowering plant taxonomy. Harvard University Press.
Lua i Stíl Chicago (17ú heag.)Heslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Cambridge, Mass: Harvard University Press, 1953.
Lua MLA (9ú heag.)Heslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Harvard University Press, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.