Huntington Smith, Helena (16 de febrero de 1975). «The Wringing of the West». The Washington Post (Washington, DC). pp. -1-B4. ISSN0190-8286. Consultado el 15 de mayo de 2017.
"Lamm explained his view that Colorado must begin to control its own future, rather than succumbing to Washington's plea that the state should be “a national sacrifice area” to provide for the nation's energy needs." «An eco‐freak for governor?». 27 de octubre de 1974. ISSN0362-4331. Consultado el 10 de mayo de 2017.
"Lamm explained his view that Colorado must begin to control its own future, rather than succumbing to Washington's plea that the state should be “a national sacrifice area” to provide for the nation's energy needs." «An eco‐freak for governor?». 27 de octubre de 1974. ISSN0362-4331. Consultado el 10 de mayo de 2017.
Huntington Smith, Helena (16 de febrero de 1975). «The Wringing of the West». The Washington Post (Washington, DC). pp. -1-B4. ISSN0190-8286. Consultado el 15 de mayo de 2017.