APA
Brubaker S., . (1972). To live on earth: Man and his environment in persepective. Washington: Resources for the Future.
Chicago
Brubaker Sterling, . 1972. To live on earth: Man and his environment in persepective. Washington: Resources for the Future.
Harvard
Brubaker S., . (1972). To live on earth: Man and his environment in persepective. Washington: Resources for the Future.
MLA
Brubaker Sterling, . To live on earth: Man and his environment in persepective. Washington: Resources for the Future. 1972.