PHILLIPS, C. S. (1991). Labour And Politics In Panama The Torryos Years Sharon Phillips Collazos. Westview.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPHILLIPS, Collazos Sharon. Labour And Politics In Panama The Torryos Years Sharon Phillips Collazos. Westview, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPHILLIPS, Collazos Sharon. Labour And Politics In Panama The Torryos Years Sharon Phillips Collazos. Westview, 1991.
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