Philippines. Board of Investments. (1970). Questions and answers on foreign investments in the Philippines. Government Printing Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. Board of Investments. Questions and Answers on Foreign Investments in the Philippines. [Manila: Government Printing Office, 1970.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. Board of Investments. Questions and Answers on Foreign Investments in the Philippines. Government Printing Office, 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.