Federal Register, Volume 80, number 205 (PDF), U.S. Government Printing Office, October 23, 2015, pp. 64661–65120, RIN 2060–AR33 "A new national Clean Power Plan".
اطلع عليه بتاريخ August 3, 2015.  Federal Register, Volume 80, number 205 (PDF)، U.S. Government Printing Office، October 23, 2015، صفحات 64661–65120، RIN 2060–AR33  "A new national Clean Power Plan".