Παραπομπή APA

Howard D. Leathers & Phillip Foster. (2005). The World food Problem (Ed-3.). Viva Books Pvt. Ltd.

Παραπομπή Chicago Style

Howard D. Leathers και Phillip Foster. The World Food Problem. Ed-3. New Delhi: Viva Books Pvt. Ltd, 2005.

Παραπομπή MLA

Howard D. Leathers και Phillip Foster. The World Food Problem. Ed-3. Viva Books Pvt. Ltd, 2005.