Hough, B. O. (1925). Getting export business. Institute of Business Science.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHough, Benjamin Olney. Getting Export Business. Scranton, Pa: Institute of Business Science, 1925.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHough, Benjamin Olney. Getting Export Business. Institute of Business Science, 1925.
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