Smithsonian Institutions. (1968). The Fitness of man's environment. With and introd. by Jennie Lee. Harper & Row.
Chicago-viite (17. p.)Smithsonian Institutions. The Fitness of Man's Environment. With and Introd. by Jennie Lee. New York: Harper & Row, 1968.
MLA-viite (9. p.)Smithsonian Institutions. The Fitness of Man's Environment. With and Introd. by Jennie Lee. Harper & Row, 1968.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.