Oruka, H. O. (1991). The philosophy of liberty: An essay on political philosophy. Standard Textbooks Graphics and Publishing.
Cita Chicago (17th ed.)Oruka, H. Odera. The Philosophy of Liberty: An Essay on Political Philosophy. Nairobi, Kenya: Standard Textbooks Graphics and Publishing, 1991.
Cita MLA (9th ed.)Oruka, H. Odera. The Philosophy of Liberty: An Essay on Political Philosophy. Standard Textbooks Graphics and Publishing, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.