توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Valdepenas, V. P. (1977). International trade and investment allocation in Philippine wood-based industries [microform]. Photoduplication Service. University of the Philippines LIbrary.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Valdepenas, Victor Pabaran. International Trade and Investment Allocation in Philippine Wood-based Industries [microform]. Quezon City: Photoduplication Service. University of the Philippines LIbrary, 1977.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Valdepenas, Victor Pabaran. International Trade and Investment Allocation in Philippine Wood-based Industries [microform]. Photoduplication Service. University of the Philippines LIbrary, 1977.