APA
Population Education Clearing House, International Labour Organization, . (1993). Pech newsletter. Geneva: International Labour Organization.
Chicago
Population Education Clearing House, International Labour Organization, . 1993. Pech newsletter. Geneva: International Labour Organization.
Harvard
Population Education Clearing House, International Labour Organization, . (1993). Pech newsletter. Geneva: International Labour Organization.
MLA
Population Education Clearing House, International Labour Organization, . Pech newsletter. Geneva: International Labour Organization. 1993.