Cita APA (7th ed.)

Graaf, H. J. d., Keurs, W. J. t., & Musters, C. J. M. (1999). Regional opportunities for sustainable development: Theory, methods, and applications. Kluwer Academic Publishers.

Cita Chicago (17th ed.)

Graaf, H. J. de, W. J. ter Keurs, i C. J. M. Musters. Regional Opportunities for Sustainable Development: Theory, Methods, and Applications. Dordrecht ; Boston: Kluwer Academic Publishers, 1999.

Cita MLA (8th ed.)

Graaf, H. J. de, et al. Regional Opportunities for Sustainable Development: Theory, Methods, and Applications. Kluwer Academic Publishers, 1999.