Παραπομπή APA

International Labour Office. (1970). Introduction to social security: A workers educational manual. International Labour Office.

Παραπομπή Chicago Style

International Labour Office. Introduction to Social Security: A Workers Educational Manual. Geneva: International Labour Office, 1970.

Παραπομπή MLA

International Labour Office. Introduction to Social Security: A Workers Educational Manual. International Labour Office, 1970.