Cita APA (7th ed.)
Hutton, J. (1972). Urban challenge in East Africa. East African Pub. House.
Cita Chicago (17th ed.)
Hutton, John. Urban Challenge in East Africa. [Nairobi]: East African Pub. House, 1972.
Cita MLA (9th ed.)
Hutton, John. Urban Challenge in East Africa. East African Pub. House, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.