ILO-NTUC National Workshop for Trade Union Educators on Family Planning & Population Education Singapore, International Labour Organisation, & National Trade Union Congress. (1974). National Workshop for Trade Union Educators on Family Planning & Population Education, venue, Apollo Hotel, duration, 28 Oct-1 Nov 74: Programme. s.n..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ILO-NTUC National Workshop for Trade Union Educators on Family Planning & Population Education Singapore, International Labour Organisation, و National Trade Union Congress. National Workshop for Trade Union Educators on Family Planning & Population Education, Venue, Apollo Hotel, Duration, 28 Oct-1 Nov 74: Programme. [s.l.: s.n., 1974.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)ILO-NTUC National Workshop for Trade Union Educators on Family Planning & Population Education Singapore, et al. National Workshop for Trade Union Educators on Family Planning & Population Education, Venue, Apollo Hotel, Duration, 28 Oct-1 Nov 74: Programme. s.n., 1974.