APA
International Labour Office, International Labor Conference, . (1964). The employment of young persons in underground work in mines of all kinds. Geneva: International Labour Office.
Chicago
International Labour Office, International Labor Conference, . 1964. The employment of young persons in underground work in mines of all kinds. Geneva: International Labour Office.
Harvard
International Labour Office, International Labor Conference, . (1964). The employment of young persons in underground work in mines of all kinds. Geneva: International Labour Office.
MLA
International Labour Office, International Labor Conference, . The employment of young persons in underground work in mines of all kinds. Geneva: International Labour Office. 1964.