Hardy, R. E. (1973). Applied volunteerism in community development. Thomas.
芝加哥风格引文Hardy, Richard E. Applied Volunteerism in Community Development. Springfield, Ill: Thomas, 1973.
MLA引文Hardy, Richard E. Applied Volunteerism in Community Development. Thomas, 1973.
警告：这些引文格式不一定是100％准确.