Philippine Islands. Bureau of Coast and Geodetic Survey. (1924). Relief model of the Philippine Islands: Notes on the construction and some of its salient features. Bureau of Printing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippine Islands. Bureau of Coast and Geodetic Survey. Relief Model of the Philippine Islands: Notes on the Construction and Some of Its Salient Features. Manila: Bureau of Printing, 1924.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippine Islands. Bureau of Coast and Geodetic Survey. Relief Model of the Philippine Islands: Notes on the Construction and Some of Its Salient Features. Bureau of Printing, 1924.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.