APA
Ward B. д. J. B., . (1959). Five Ideas that Change the World. New York: Norton & Co.
Chicago
Ward Barbara див Jackson Barbara, . 1959. Five Ideas that Change the World. New York: Norton & Co.
Harvard
Ward B. д. J. B., . (1959). Five Ideas that Change the World. New York: Norton & Co.
MLA
Ward Barbara див Jackson Barbara, . Five Ideas that Change the World. New York: Norton & Co. 1959.
