Kunkel, D. E., Gonzales, L. A., & Sharples, J. M. (1972). The theoretical underpinnings of sectoral policy and planning models: Some further extensions. Project ADAM.
Cita Chicago (17th ed.)Kunkel, David E., Leonard A. Gonzales, i Jerry M. Sharples. The Theoretical Underpinnings of Sectoral Policy and Planning Models: Some Further Extensions. [Quezon City: Project ADAM, 1972.
Cita MLA (9th ed.)Kunkel, David E., et al. The Theoretical Underpinnings of Sectoral Policy and Planning Models: Some Further Extensions. Project ADAM, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.