INDIA GOVERNMENT. (1991). INDIA 1991: A REFERENCE ANNUAL. GOVERNMENT OF INDIA.
芝加哥风格引文INDIA GOVERNMENT. INDIA 1991: A REFERENCE ANNUAL. NEW DELHI: GOVERNMENT OF INDIA, 1991.
MLA引文INDIA GOVERNMENT. INDIA 1991: A REFERENCE ANNUAL. GOVERNMENT OF INDIA, 1991.
警告：这些引文格式不一定是100％准确.