APA
Heilbroner R. L., . (1972). The wordly philosophers: The lives, times, and ideals of the great economic thinkers. New York: A Touchstone Book.
Chicago
Heilbroner Robert L, . 1972. The wordly philosophers: The lives, times, and ideals of the great economic thinkers. New York: A Touchstone Book.
Harvard
Heilbroner R. L., . (1972). The wordly philosophers: The lives, times, and ideals of the great economic thinkers. New York: A Touchstone Book.
MLA
Heilbroner Robert L, . The wordly philosophers: The lives, times, and ideals of the great economic thinkers. New York: A Touchstone Book. 1972.
