Cita APA (7th ed.)
Livingstone, I., & Ord, H. (1980). Economics for Eastern Africa. E.A.E.P.
Cita Chicago (17th ed.)
Livingstone, I., i H.W Ord. Economics for Eastern Africa. Nairobi: E.A.E.P, 1980.
Cita MLA (9th ed.)
Livingstone, I., i H.W Ord. Economics for Eastern Africa. E.A.E.P, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.