Organisation for Economic Co-operation and Development. (2019). National accounts of OECD countries: Main aggregates. OECD.
Dyfyniad Arddull ChicagoOrganisation for Economic Co-operation and Development. National Accounts of OECD Countries: Main Aggregates. Paris: OECD, 2019.
Dyfyniad MLAOrganisation for Economic Co-operation and Development. National Accounts of OECD Countries: Main Aggregates. OECD, 2019.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.