Wistar, R. (1963). Man and his physical universe (2d ed.). Wiley.
Chicago-viite (17. p.)Wistar, Richard. Man and His Physical Universe. 2d ed. New York: Wiley, 1963.
MLA-viite (9. p.)Wistar, Richard. Man and His Physical Universe. 2d ed. Wiley, 1963.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.