APA (7 वां संस्करण) प्रशस्ति पत्र

Organisation for Economic Co-operation and Development. (1973). Salient features of regional development policy in Spain.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Organisation for Economic Co-operation and Development. Salient Features of Regional Development Policy in Spain. [Paris], 1973.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Organisation for Economic Co-operation and Development. Salient Features of Regional Development Policy in Spain. 1973.