Sturton, M. (1992). Tonga: Development through agricultural exports. Pacific Islands Development Program, East-West Center.
Citazione stile Chigago Style (17a edizione)Sturton, Mark. Tonga: Development Through Agricultural Exports. Honolulu, Hawaii: Pacific Islands Development Program, East-West Center, 1992.
Citatione MLA (8a ed.)Sturton, Mark. Tonga: Development Through Agricultural Exports. Pacific Islands Development Program, East-West Center, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.