Papua New Guinea. Dept. of Primary Industry. (1979). Agriculture in the economy: A series of review papers. Dept. of Primary Industry, Papua New Guinea.
Citazione stile Chigago Style (17a edizione)Papua New Guinea. Dept. of Primary Industry. Agriculture in the Economy: A Series of Review Papers. [Port Moresby]: Dept. of Primary Industry, Papua New Guinea, 1979.
Citatione MLA (8a ed.)Papua New Guinea. Dept. of Primary Industry. Agriculture in the Economy: A Series of Review Papers. Dept. of Primary Industry, Papua New Guinea, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.