Northrup, H. R., Storholm, G. R., & paul, A. A. (1967). Restrictive labor practices in the supermarket industry. University of Pennsylvania Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNorthrup, Herbert Roof, Gordon R. Storholm, और A. Abodeely paul. Restrictive Labor Practices in the Supermarket Industry. Philadelphia: University of Pennsylvania Press, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNorthrup, Herbert Roof, et al. Restrictive Labor Practices in the Supermarket Industry. University of Pennsylvania Press, 1967.
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