Singh, A. K. (2000). Saudi-US relations: The oil factor. Classical Pub. Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Ashok Kumar. Saudi-US Relations: The Oil Factor. Classical Pub. Co, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Ashok Kumar. Saudi-US Relations: The Oil Factor. Classical Pub. Co, 2000.
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