Philippines. Department of Labor and Employment. Labor Population Program Office. (1989). Philippine national inventory/baseline survey on family welfare. DOLE.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. Department of Labor and Employment. Labor Population Program Office. Philippine National Inventory/baseline Survey on Family Welfare. Manila: DOLE, 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. Department of Labor and Employment. Labor Population Program Office. Philippine National Inventory/baseline Survey on Family Welfare. DOLE, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.