(1971). The Stateman's yearbook: Statitstical and historical annual of the states of the world for the year 1971-1972. MacMillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThe Stateman's Yearbook: Statitstical and Historical Annual of the States of the World for the Year 1971-1972. London: MacMillan, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रThe Stateman's Yearbook: Statitstical and Historical Annual of the States of the World for the Year 1971-1972. MacMillan, 1971.
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