APA (7th ed.) Citation

Engels, J., Hawkes, J. G., & Worede, M. (1991). Plant genetic resources of Ethiopia. Cambridge University Press. https://doi.org/10.1017/CBO9780511551543

Chicago Style (17th ed.) Citation

Engels, Jan, J. G. Hawkes, and Melaku Worede. Plant Genetic Resources of Ethiopia. Cambridge: Cambridge University Press, 1991. https://doi.org/10.1017/CBO9780511551543.

MLA (9th ed.) Citation

Engels, Jan, et al. Plant Genetic Resources of Ethiopia. Cambridge University Press, 1991. https://doi.org/10.1017/CBO9780511551543.