INTERNATIONAL LABOUR OFFICE. (1951). PAYMENT BY RESULTS. OXFORD UNIVERSITY PRESS.
芝加哥风格引文INTERNATIONAL LABOUR OFFICE. PAYMENT BY RESULTS. DELHI: OXFORD UNIVERSITY PRESS, 1951.
MLA引文INTERNATIONAL LABOUR OFFICE. PAYMENT BY RESULTS. OXFORD UNIVERSITY PRESS, 1951.
警告：这些引文格式不一定是100％准确.