Crosby, S. H. (1941). Trial examiner's report: Docket no. IT-5647 : Northwestern Electric Company, Pacific Power & Light Company, Portland General Electric Company, Puget Sound Power & Light Company, Washington Water Power Company : investigation into nature, extent and accounting disposition of expenditures incident to political activities. s.n..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCrosby, Samuel H. Trial Examiner's Report: Docket No. IT-5647 : Northwestern Electric Company, Pacific Power & Light Company, Portland General Electric Company, Puget Sound Power & Light Company, Washington Water Power Company : Investigation into Nature, Extent and Accounting Disposition of Expenditures Incident to Political Activities. [Washington, D.C.: s.n., 1941.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCrosby, Samuel H. Trial Examiner's Report: Docket No. IT-5647 : Northwestern Electric Company, Pacific Power & Light Company, Portland General Electric Company, Puget Sound Power & Light Company, Washington Water Power Company : Investigation into Nature, Extent and Accounting Disposition of Expenditures Incident to Political Activities. s.n., 1941.