APA-viite

Awad E M. (2016). Colon classification (6.). ESS ESS publication.

Chicago-tyylinen lähdeviittaus

Awad E M. Colon Classification. 6. New Delhi: ESS ESS publication, 2016.

MLA-viite

Awad E M. Colon Classification. 6. ESS ESS publication, 2016.