(1960). Principles Of Business Organization And Operation William R. Spriegel. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPrinciples Of Business Organization And Operation William R. Spriegel. Prentice-Hall, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPrinciples Of Business Organization And Operation William R. Spriegel. Prentice-Hall, 1960.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.