Heslop-Harrison, J. (1953). New concepts in flowering plant taxonomy. Harvard University Press.
Cita Chicago (17th ed.)Heslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Cambridge, Mass: Harvard University Press, 1953.
Cita MLA (9th ed.)Heslop-Harrison, J. New Concepts in Flowering Plant Taxonomy. Harvard University Press, 1953.
Atenció: Aquestes cites poden no estar 100% correctes.