Yuan, Z. H. (1993). An exploration of the security patrol system in big cities.
Chicago Style (17th ed.) CitationYuan, Zhi Hang. An Exploration of the Security Patrol System in Big Cities. [Beijing], 1993.
MLA (9th ed.) CitationYuan, Zhi Hang. An Exploration of the Security Patrol System in Big Cities. 1993.
Warning: These citations may not always be 100% accurate.