Falcón-Linares, C. and Arraiz-Pérez, A. 2017. Efficient and sustainable career construction: the professional portfolio as a resource at university guidance. REOP - Revista Española de Orientación y Psicopedagogía. 28, 2 (Oct. 2017), 8–29. DOI:https://doi.org/10.5944/reop.vol.28.num.2.2017.20116.