توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Philippines. Department of Environment and Natural Resources. Planning and Policy Studies Office. (2001). The electronic edition of environment and natural resources policy issuances (1996-2000) (Release 1.). DENR.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Philippines. Department of Environment and Natural Resources. Planning and Policy Studies Office. The Electronic Edition of Environment and Natural Resources Policy Issuances (1996-2000). Release 1. Quezon City: DENR, 2001.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Philippines. Department of Environment and Natural Resources. Planning and Policy Studies Office. The Electronic Edition of Environment and Natural Resources Policy Issuances (1996-2000). Release 1. DENR, 2001.