Spriegel, W. R., Edward Schulz, & William B Spriegel. (1957). Elements of supervision. John Wiley & Sons.
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Chicago Style (17th ed.) Citation
Spriegel, William R., Edward Schulz, and William B Spriegel. Elements of Supervision. New York: John Wiley & Sons, 1957.
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MLA (9th ed.) Citation
Spriegel, William R., et al. Elements of Supervision. John Wiley & Sons, 1957.
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Warning: These citations may not always be 100% accurate.