APA Citation

Harper, J. L. A. (1969). Biology of weeds: Symposium of the british ecological society Oxford 2nd - 4th April 1959. Oxford: Blackwell Scientific.

Chicago Style Citation

Harper, John L.; A. Biology of Weeds: Symposium of the British Ecological Society Oxford 2nd - 4th April 1959. Oxford: Blackwell Scientific, 1969.

MLA Citation

Harper, John L.; A. Biology of Weeds: Symposium of the British Ecological Society Oxford 2nd - 4th April 1959. Oxford: Blackwell Scientific, 1969.

Warning: These citations may not always be 100% accurate.