Dyfyniad APA
Organisation for Economic Co-operation and Development. (1999). Insurance statistics yearbook 1990-1997 (1999 edition.). OECD Publishing.
Dyfyniad Arddull Chicago
Organisation for Economic Co-operation and Development. Insurance Statistics Yearbook 1990-1997. 1999 edition. Paris: OECD Publishing, 1999.
Dyfyniad MLA
Organisation for Economic Co-operation and Development. Insurance Statistics Yearbook 1990-1997. 1999 edition. OECD Publishing, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.