Organisation for Economic Co-operation and Development. (2018). OECD competition assessment reviews: Portugal. Organisation for Economic Co-operation and Development.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Organisation for Economic Co-operation and Development. OECD Competition Assessment Reviews: Portugal. Paris, France: Organisation for Economic Co-operation and Development, 2018.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Organisation for Economic Co-operation and Development. OECD Competition Assessment Reviews: Portugal. Organisation for Economic Co-operation and Development, 2018.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.