CENTRE OF PUBLICATIONS NEW DELHI. (1991). DIRECTORY OF CENTRAL GOVERNMENT OFFICIALS. CENTRE OF PUBLICATION.
芝加哥风格引文CENTRE OF PUBLICATIONS NEW DELHI. DIRECTORY OF CENTRAL GOVERNMENT OFFICIALS. NEW DELHI: CENTRE OF PUBLICATION, 1991.
MLA引文CENTRE OF PUBLICATIONS NEW DELHI. DIRECTORY OF CENTRAL GOVERNMENT OFFICIALS. CENTRE OF PUBLICATION, 1991.
警告：这些引文格式不一定是100％准确.