APA (7 वां संस्करण) प्रशस्ति पत्र
European Conference of Ministers of Transport & ProQuest (Firm). (2007). Competitive tendering of rail services. ECMT : Distributed by OECD Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
European Conference of Ministers of Transport और ProQuest (Firm). Competitive Tendering of Rail Services. Paris: ECMT : Distributed by OECD Pub., 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
European Conference of Ministers of Transport और ProQuest (Firm). Competitive Tendering of Rail Services. ECMT : Distributed by OECD Pub., 2007.
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