Instituto Brasileiro de Informação em Ciência e Tecnologia

توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Não informado. (1955). Public Relations Quarterly. Public Relations Quarterly.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Não informado. Public Relations Quarterly. Rhinebeck, NJ: Public Relations Quarterly, 1955.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Não informado. Public Relations Quarterly. Public Relations Quarterly, 1955.