Ancheta, F. (1975). The secretarial requirements for employment in business firms in Manila [microform]. Photoduplication Service, University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ancheta, Francisco. The Secretarial Requirements for Employment in Business Firms in Manila [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1975.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ancheta, Francisco. The Secretarial Requirements for Employment in Business Firms in Manila [microform]. Photoduplication Service, University of the Philippines Library, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.