APA (7th ed.) Citation

Marei, S. (1978). The world food crisis (2nd ed.). Longman.

Chicago Style (17th ed.) Citation

Marei, Sayed. The World Food Crisis. 2nd ed. London: Longman, 1978.

MLA (9th ed.) Citation

Marei, Sayed. The World Food Crisis. 2nd ed. Longman, 1978.