APA استشهاد

Engels ,J M M et al. (2002). Managing plant genetic diversity. CABI Publishing.

استشهاد بنمط شيكاغو

Engels ,J M M et al. Managing Plant Genetic Diversity. UK: CABI Publishing, 2002.

MLA استشهاد

Engels ,J M M et al. Managing Plant Genetic Diversity. CABI Publishing, 2002.