APA
Rand A., . (1990). Voice of reason. New York: Penguin Groups # Meridian Book.
Chicago
Rand Ayn, . 1990. Voice of reason. New York: Penguin Groups # Meridian Book.
Harvard
Rand A., . (1990). Voice of reason. New York: Penguin Groups # Meridian Book.
MLA
Rand Ayn, . Voice of reason. New York: Penguin Groups # Meridian Book. 1990.