APA (7th ed.) Citation

Harper, J. L. (1960). The biology of weeds: A symposium of the British Ecological Society, Oxford, 2d-4th April 1959. Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Harper, John L. The Biology of Weeds: A Symposium of the British Ecological Society, Oxford, 2d-4th April 1959. Oxford: Blackwell Scientific Publications, 1960.

MLA (9th ed.) Citation

Harper, John L. The Biology of Weeds: A Symposium of the British Ecological Society, Oxford, 2d-4th April 1959. Blackwell Scientific Publications, 1960.