University of the Philippines Diliman. College of Arts and Letters & Guban, D. (2012). Cultural and environmental issues in Spain. DZUP.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUniversity of the Philippines Diliman. College of Arts and Letters और Danica Guban. Cultural and Environmental Issues in Spain. Quezon City: DZUP, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUniversity of the Philippines Diliman. College of Arts and Letters और Danica Guban. Cultural and Environmental Issues in Spain. DZUP, 2012.
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