Papua New Guinea. Bureau of Statistics. (1959). Imports cleared for home consumption. Bureau of Statistics.
Cita Chicago (17th ed.)Papua New Guinea. Bureau of Statistics. Imports Cleared for Home Consumption. Port Moresby: Bureau of Statistics, 1959.
Cita MLA (8th ed.)Papua New Guinea. Bureau of Statistics. Imports Cleared for Home Consumption. Bureau of Statistics, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.