International Labour Office & ebrary, Inc. (2011). Guidelines for the use of the ILO international classification of radiographs of pneumoconioses (Rev. ed.). International Labour Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Labour Office και Inc ebrary. Guidelines for the Use of the ILO International Classification of Radiographs of Pneumoconioses. Rev. ed. Geneva: International Labour Office, 2011.
Παραπομπή σε μορφή MLA (9th εκδ.)International Labour Office και Inc ebrary. Guidelines for the Use of the ILO International Classification of Radiographs of Pneumoconioses. Rev. ed. International Labour Office, 2011.
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