توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Philippines (Republic) Dept. of Tourism & Philippines (Republic). Department of Tourism. Tourism: Four-year development plan, 1974 to 1977. [s.n.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Philippines (Republic) Dept. of Tourism و Philippines (Republic). Department of Tourism. Tourism: Four-year Development Plan, 1974 to 1977. Manila: [s.n.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Philippines (Republic) Dept. of Tourism و Philippines (Republic). Department of Tourism. Tourism: Four-year Development Plan, 1974 to 1977. [s.n.