APA Edition Citation

Harper, J. L. (1960). Biology of weeds: A symposium of the British ecological society, Oxford, 2nd - 4th Aptril, 1959. Blackwell scientific publications.

Chicago Edition Citation

Harper, John L. Biology of Weeds: A Symposium of the British Ecological Society, Oxford, 2nd - 4th Aptril, 1959. Oxford: Blackwell scientific publications, 1960.

MLA Edition Citation

Harper, John L. Biology of Weeds: A Symposium of the British Ecological Society, Oxford, 2nd - 4th Aptril, 1959. Blackwell scientific publications, 1960.