Não informado. (1926). Bulletin of business research. Ohio State University, Bureau of Business Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of Business Research. Columbus, Ohio: Ohio State University, Bureau of Business Research, 1926.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Bulletin of Business Research. Ohio State University, Bureau of Business Research, 1926.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.