Scripps Institution of Oceanography's scientific research vessel Horizon, originally a 143-foot sea going tug for the US Navy, she was acquired in 1948 for the institution through Roger Revelle. From 1949 through 1968 she made 267 scientific cruises, spent 4,207 days at sea, and logged 610,522 miles. Circa 1974

Chicago citation style
Scripps Institution of Oceanography's scientific research vessel Horizon, originally a 143-foot sea going tug for the US Navy, she was acquired in 1948 for the institution through Roger Revelle. From 1949 through 1968 she made 267 scientific cruises, spent 4,207 days at sea, and logged 610,522 miles. Circa 1974. 1974-01. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb8806582n. (Accessed December 13, 2018.)
APA citation style
(1974-01) Scripps Institution of Oceanography's scientific research vessel Horizon, originally a 143-foot sea going tug for the US Navy, she was acquired in 1948 for the institution through Roger Revelle. From 1949 through 1968 she made 267 scientific cruises, spent 4,207 days at sea, and logged 610,522 miles. Circa 1974. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb8806582n
MLA citation style
Retrieved from the Digital Public Library of America <https://library.ucsd.edu/dc/object/bb8806582n>.
Note: These citations are programmatically generated and may be incomplete.