HYDRO-ELECTRIC POWER COMES FROM THE COLUMBIA RIVER AND OTHER WATER SOURCES IN OREGON. HERE THE COLUMBIA IS SHOWN AT ROOSTER ROCK STATE PARK, 18 MILES EAST OF PORTLAND, AT A RECORD LOW RIVER BEDS NEVER SEEN BEFORE WERE EXPOSED MORE THAN THREE MONTHS

Chicago citation style
Environmental Protection Agency. 12/2/1970. HYDRO-ELECTRIC POWER COMES FROM THE COLUMBIA RIVER AND OTHER WATER SOURCES IN OREGON. HERE THE COLUMBIA IS SHOWN AT ROOSTER ROCK STATE PARK, 18 MILES EAST OF PORTLAND, AT A RECORD LOW RIVER BEDS NEVER SEEN BEFORE WERE EXPOSED MORE THAN THREE MONTHS. 1973-10. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/555394. (Accessed September 24, 2018.)
APA citation style
Environmental Protection Agency. 12/2/1970, (1973-10) HYDRO-ELECTRIC POWER COMES FROM THE COLUMBIA RIVER AND OTHER WATER SOURCES IN OREGON. HERE THE COLUMBIA IS SHOWN AT ROOSTER ROCK STATE PARK, 18 MILES EAST OF PORTLAND, AT A RECORD LOW RIVER BEDS NEVER SEEN BEFORE WERE EXPOSED MORE THAN THREE MONTHS. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/555394
MLA citation style
Environmental Protection Agency. 12/2/1970. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/555394>.
Note: These citations are programmatically generated and may be incomplete.