Berza, S. P., & Salazar, R. C. A hierarchy of regional centers: The center's role in regional development.
Cita Chicago (17th ed.)Berza, Samuel P., i Roderick C. Salazar. A Hierarchy of Regional Centers: The Center's Role in Regional Development.
Cita MLA (9th ed.)Berza, Samuel P., i Roderick C. Salazar. A Hierarchy of Regional Centers: The Center's Role in Regional Development.
Atenció: Aquestes cites poden no estar 100% correctes.