Cita APA (7a ed.)

Heywood, V. H. (1971). The biology and chemistry of the umbelliferae. Academic Press.

Cita Chicago Style (17a ed.)

Heywood, V. H. The Biology and Chemistry of the Umbelliferae. London: Academic Press, 1971.

Cita MLA (8a ed.)

Heywood, V. H. The Biology and Chemistry of the Umbelliferae. Academic Press, 1971.