International Labor Office, World Employment Programme, & Costa, E. (1977). Guidelines for the organization of special labour-intensive works programmes. International Labour Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Labor Office, World Employment Programme, और Emile Costa. Guidelines for the Organization of Special Labour-intensive Works Programmes. Geneva: International Labour Office, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Labor Office, et al. Guidelines for the Organization of Special Labour-intensive Works Programmes. International Labour Office, 1977.
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