Citazione Stile APA (7a Edizione)

Heslop-Harrison, J. (1953). New concepts in flowering plant taxonomy. Harvard University Press.

Citazione stile Chigago Style (17a edizione)

Heslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Cambridge, Mass: Harvard University Press, 1953.

Citatione MLA (9a ed.)

Heslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Harvard University Press, 1953.