APA استشهاد

Chowdhury G G & others. (2008). Colon classification (6.). ESS ESS publication.

استشهاد بنمط شيكاغو

Chowdhury G G & others. Colon Classification. 6. New Delhi: ESS ESS publication, 2008.

MLA استشهاد

Chowdhury G G & others. Colon Classification. 6. ESS ESS publication, 2008.