IKPO, J. I. (2006). Building maintenance. Sedyn Publishers.
芝加哥风格引文IKPO, Johnson Ime. Building Maintenance. Sedyn Publishers, 2006.
MLA引文IKPO, Johnson Ime. Building Maintenance. Sedyn Publishers, 2006.
警告：这些引文格式不一定是100％准确.
APA引文