National Agricultural Advisory Committee Conference Goroka, Papua New Guinea, & Coffee Industry Corporation. Extension Services Division. (1998). Enhancement of agricultural extension services in Papua New Guinea. Coffee Industry Corporation.
Citazione stile Chigago Style (17a edizione)National Agricultural Advisory Committee Conference Goroka, Papua New Guinea, e Coffee Industry Corporation. Extension Services Division. Enhancement of Agricultural Extension Services in Papua New Guinea. Goroka: Coffee Industry Corporation, 1998.
Citatione MLA (9a ed.)National Agricultural Advisory Committee Conference Goroka, Papua New Guinea, e Coffee Industry Corporation. Extension Services Division. Enhancement of Agricultural Extension Services in Papua New Guinea. Coffee Industry Corporation, 1998.