APA
Posner R. A., . (2001). Frontiers of legal theory. UniversalLaw Publisher: New Delhi.
Chicago
Posner Richard A, . 2001. Frontiers of legal theory. UniversalLaw Publisher: New Delhi.
Harvard
Posner R. A., . (2001). Frontiers of legal theory. UniversalLaw Publisher: New Delhi.
MLA
Posner Richard A, . Frontiers of legal theory. UniversalLaw Publisher: New Delhi. 2001.