Gibb, A. (1972). Some evidence on agricultural-based cities. Institute of Economic Development and Research, University of the Philippines.
Cita Chicago (17th ed.)Gibb, Arthur. Some Evidence on Agricultural-based Cities. [Quezon City]: Institute of Economic Development and Research, University of the Philippines, 1972.
Cita MLA (9th ed.)Gibb, Arthur. Some Evidence on Agricultural-based Cities. Institute of Economic Development and Research, University of the Philippines, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.