APA (7th ed.) Citation

Castro, E., Vieira, G., Loureiro, F., Patrocínio, F., Firmino, G., Gomes, H., & Fernandes, M. (2018). Aspiring Geopark Estrela: A Strategy for Sustainable Development.

Chicago Style (17th ed.) Citation

Castro, Emanuel, Goncalo Vieira, Fábio Loureiro, Filipe Patrocínio, Gisela Firmino, Hugo Gomes, and Magda Fernandes. Aspiring Geopark Estrela: A Strategy for Sustainable Development. 2018.

MLA (8th ed.) Citation

Castro, Emanuel, et al. Aspiring Geopark Estrela: A Strategy for Sustainable Development. 2018.