Winthrop, W. (1976). The problem of the Philippines: Racial, commercial, religious, political, and social conditions [microform]. Photoduplication Service, University of the Philippines Library.
Čikaški stil citiranja (17. izdanje)Winthrop, W. The Problem of the Philippines: Racial, Commercial, Religious, Political, and Social Conditions [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
MLA način citiranja (9. izdanje)Winthrop, W. The Problem of the Philippines: Racial, Commercial, Religious, Political, and Social Conditions [microform]. Photoduplication Service, University of the Philippines Library, 1976.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.