Rego, A., Leite, R., Carvalho, T., Freire, C. & Vieira, A. (2004). Organizational Commitment: Toward a Different Understanding of the Ways People Feel Attached to Their Organizations. Management Research, 2(3), 201-218.
Six dimensions of organizational commitment are measured: affective commitment, future in common, normative commitment, high sacrifices, low alternatives, accommodating commitment. Some items were collected in the literature and others were adapted or created by the authors.
If you want to contact the first author to receive the version of the scales in Portuguese, e-mail Arménio Rego at armenio.rego@ua.pt