International Labour Office. (1977). Social and labour practices of multinational enterprises in the petroleum industry. International Labour Office.
Chicago-viite (17. p.)International Labour Office. Social and Labour Practices of Multinational Enterprises in the Petroleum Industry. Geneva: International Labour Office, 1977.
MLA-viite (9. p.)International Labour Office. Social and Labour Practices of Multinational Enterprises in the Petroleum Industry. International Labour Office, 1977.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.