APA (7th ed.) Citation

American Society of Agronomy. Conference. otros, Tonkin, E., Mac Donald, M., & Chapman, M. (1989). History and ethnicity. Routledge.

Chicago Style (17th ed.) Citation

American Society of Agronomy. Conference. otros, Elizabeth Tonkin, Maryon Mac Donald, and Malcolm Chapman. History and Ethnicity. London [etc.]: Routledge, 1989.

MLA (9th ed.) Citation

American Society of Agronomy. Conference. otros, et al. History and Ethnicity. Routledge, 1989.