Instituto Brasileiro de Informação em Ciência e Tecnologia

توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Não informado. (1969). Foreign economic trends and their implications for the United States. U.S. Department of Commerce.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Não informado. Foreign Economic Trends and Their Implications for the United States. Washington: U.S. Department of Commerce, 1969.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Não informado. Foreign Economic Trends and Their Implications for the United States. U.S. Department of Commerce, 1969.