Παραπομπή σε μορφή APA (7η εκδ.)

Appleyard, D. (1987). Comparative advantage of agricultural production systems and its policy implications in Pakistan. Food and Agriculture Organization of the United Nations.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Appleyard, D. Comparative Advantage of Agricultural Production Systems and Its Policy Implications in Pakistan. Rome: Food and Agriculture Organization of the United Nations, 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Appleyard, D. Comparative Advantage of Agricultural Production Systems and Its Policy Implications in Pakistan. Food and Agriculture Organization of the United Nations, 1987.