Dyfyniad APA
International Labour Office & ebrary, Inc. (2011). Guidelines for the use of the ILO international classification of radiographs of pneumoconioses (Rev. ed.). International Labour Office.
Dyfyniad Arddull Chicago
International Labour Office and Inc ebrary. Guidelines for the Use of the ILO International Classification of Radiographs of Pneumoconioses. Rev. ed. Geneva: International Labour Office, 2011.
Dyfyniad MLA
International Labour Office and 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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