Cooper, G., & Henderson, B. (2000). Leap of faith: An astronaut's journey into the unknown. HarperCollins Publishers.
Chicago-viite (17. p.)Cooper, Gordon, ja Bruce Henderson. Leap of Faith: An Astronaut's Journey into the Unknown. New York: HarperCollins Publishers, 2000.
MLA-viite (9. p.)Cooper, Gordon, ja Bruce Henderson. Leap of Faith: An Astronaut's Journey into the Unknown. HarperCollins Publishers, 2000.
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