Harkin, D. A. (1975). Agrarian reform in the perspective of three years of martial law. USAID.
Chicago Style aipamenaHarkin, Duncan A. Agrarian Reform in the Perspective of Three Years of Martial Law. Manila: USAID, 1975.
MLA aipamenaHarkin, Duncan A. Agrarian Reform in the Perspective of Three Years of Martial Law. USAID, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.