lekachman, r., & novack, d. E. (1964). Development and society the dynamics of economic change. st martin's press.
Chicago (17e ed.) Bronvermeldinglekachman, robert, en david E. novack. Development and Society the Dynamics of Economic Change. new york: st martin's press, 1964.
MLA (9e ed.) Bronvermeldinglekachman, robert, en david E. novack. Development and Society the Dynamics of Economic Change. st martin's press, 1964.