APA
Oruka H. O., . (1990). Ethics. Nairobi: Nairobi University Press.
Chicago
Oruka H Odera, . 1990. Ethics. Nairobi: Nairobi University Press.
Harvard
Oruka H. O., . (1990). Ethics. Nairobi: Nairobi University Press.
MLA
Oruka H Odera, . Ethics. Nairobi: Nairobi University Press. 1990.