Oruka, H. O. (1991). The philosophy of liberty: An essay on political philosophy. Standard Textbooks Graphics and Publishing.
Chicago-viite (17. p.)Oruka, H. Odera. The Philosophy of Liberty: An Essay on Political Philosophy. Nairobi, Kenya: Standard Textbooks Graphics and Publishing, 1991.
MLA-viite (9. p.)Oruka, H. Odera. The Philosophy of Liberty: An Essay on Political Philosophy. Standard Textbooks Graphics and Publishing, 1991.
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