Citazione Stile APA (7a Edizione)

Harrison, J. H. (1964). New concepts in flowering plant taxonomy. Harvard University Press.

Citazione stile Chigago Style (17a edizione)

Harrison, John Heslop. New Concepts in Flowering Plant Taxonomy. Cambridge, MA: Harvard University Press, 1964.

Citatione MLA (9a ed.)

Harrison, John Heslop. New Concepts in Flowering Plant Taxonomy. Harvard University Press, 1964.