Pandjaitan, S., & Moeljodihardjo, S. (1980). New discoveries in the field of population mathematics applicable to planning and evaluation of population and family planning program in Indonesia. National Family Planning Coordinating Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Pandjaitan, Sahala, و Soetedjo Moeljodihardjo. New Discoveries in the Field of Population Mathematics Applicable to Planning and Evaluation of Population and Family Planning Program in Indonesia. Jakarta, Indonesia: National Family Planning Coordinating Board, 1980.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Pandjaitan, Sahala, و Soetedjo Moeljodihardjo. New Discoveries in the Field of Population Mathematics Applicable to Planning and Evaluation of Population and Family Planning Program in Indonesia. National Family Planning Coordinating Board, 1980.