Proceedings of the Consultative Meeting on the Environment (1990 : Makati, Philippines). (1990). Proceedings of the Consultative Meeting on the Environment, Makati, 13-14 February 1990. [s.n.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रProceedings of the Consultative Meeting on the Environment (1990 : Makati, Philippines). Proceedings of the Consultative Meeting on the Environment, Makati, 13-14 February 1990. Makati: [s.n.], 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रProceedings of the Consultative Meeting on the Environment (1990 : Makati, Philippines). Proceedings of the Consultative Meeting on the Environment, Makati, 13-14 February 1990. [s.n.], 1990.
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