Petsri, B. Air Transport Workers Unions of Thailand and Singapore: A comparative study.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPetsri, Bumrungcheep. Air Transport Workers Unions of Thailand and Singapore: A Comparative Study.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPetsri, Bumrungcheep. Air Transport Workers Unions of Thailand and Singapore: A Comparative Study.
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