توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

De Silva, C. R. (1978). White paper, black law: A critical analysis of the white paper on employment relations, issued by the Ministry of Labour of Sri Lanka. Ceylon Federation of Labour.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

De Silva, Colvin R. White Paper, Black Law: A Critical Analysis of the White Paper on Employment Relations, Issued by the Ministry of Labour of Sri Lanka. [Colombo]: Ceylon Federation of Labour, 1978.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

De Silva, Colvin R. White Paper, Black Law: A Critical Analysis of the White Paper on Employment Relations, Issued by the Ministry of Labour of Sri Lanka. Ceylon Federation of Labour, 1978.