Clark, A. L. (1986). Mineral resource assessment for national planning and policy formulation. Resource Systems Institute, East West Center.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClark, Allen L.l. Mineral Resource Assessment for National Planning and Policy Formulation. Hawaii: Resource Systems Institute, East West Center, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClark, Allen L.l. Mineral Resource Assessment for National Planning and Policy Formulation. Resource Systems Institute, East West Center, 1986.
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