Dyfyniad APA

International Labour Office. (1970). An introduction to social security.

Dyfyniad Arddull Chicago

International Labour Office. An Introduction to Social Security. Geneva, 1970.

Dyfyniad MLA

International Labour Office. An Introduction to Social Security. 1970.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.