Chowdhry, D. P. (1990). Voluntary effort in social welfare and development. Siddhartha Publishers.
芝加哥风格引文Chowdhry, Dharam Paul. Voluntary Effort in Social Welfare and Development. New Delhi: Siddhartha Publishers, 1990.
MLA引文Chowdhry, Dharam Paul. Voluntary Effort in Social Welfare and Development. Siddhartha Publishers, 1990.
警告：这些引文格式不一定是100％准确.