(1968). Environment far man: The next fifty years. Indiana University.
Chicago Style (17th ed.) ZitazioaEnvironment Far Man: The Next Fifty Years. London: Indiana University, 1968.
MLA (9th ed.) ZitazioaEnvironment Far Man: The Next Fifty Years. Indiana University, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.