توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Willoughby, W. F. (1977). Territories and dependencies of the United States, their Government and administration [microform]. University of the Philippines Library.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Willoughby, William Franklin. Territories and Dependencies of the United States, Their Government and Administration [microform]. Quezon City: University of the Philippines Library, 1977.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Willoughby, William Franklin. Territories and Dependencies of the United States, Their Government and Administration [microform]. University of the Philippines Library, 1977.