Broad, R., & Cavanagh, J. (1991). The Philippine challenge: Sustainable and equitable development in the 1990s. Philippine Center for Policy Studies.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Broad, Robin, و John Cavanagh. The Philippine Challenge: Sustainable and Equitable Development in the 1990s. Quezon City: Philippine Center for Policy Studies, 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Broad, Robin, و John Cavanagh. The Philippine Challenge: Sustainable and Equitable Development in the 1990s. Philippine Center for Policy Studies, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.