Leonardo, G. O. (1979). Investment requirements of Philippine agriculture: A linear programming analysis [microform]. Photoduplication Service, University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLeonardo, Garibaldi O. Investment Requirements of Philippine Agriculture: A Linear Programming Analysis [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1979.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLeonardo, Garibaldi O. Investment Requirements of Philippine Agriculture: A Linear Programming Analysis [microform]. Photoduplication Service, University of the Philippines Library, 1979.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.