Holcomb, W. P. (1886). Pennsylvania boroughs. N. Murray Publication Agent, Johns Hopkins University.
芝加哥风格引文Holcomb, William P. Pennsylvania Boroughs. Baltimore: N. Murray Publication Agent, Johns Hopkins University, 1886.
MLA引文Holcomb, William P. Pennsylvania Boroughs. N. Murray Publication Agent, Johns Hopkins University, 1886.
警告：这些引文格式不一定是100％准确.