Abundo, A. V. (1973). Principles of land reform and taxation (2nd ed.). s.n.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbundo, Alfredo V. Principles of Land Reform and Taxation. 2nd ed. [Naga City: s.n, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAbundo, Alfredo V. Principles of Land Reform and Taxation. 2nd ed. s.n, 1973.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.