Hammer, G. S. . A. (1969). Comprehensive planning assistance in the small community. United States Government Printing Office.
芝加哥风格引文Hammer, Greene Siler Associates. Comprehensive Planning Assistance in the Small Community. Washington: United States Government Printing Office, 1969.
MLA引文Hammer, Greene Siler Associates. Comprehensive Planning Assistance in the Small Community. United States Government Printing Office, 1969.
警告：这些引文格式不一定是100％准确.