APA-Zitierstil (7. Ausg.)

Yuan, Z. H. (1993). An exploration of the security patrol system in big cities.

Chicago-Zitierstil (17. Ausg.)

Yuan, Zhi Hang. An Exploration of the Security Patrol System in Big Cities. [Beijing], 1993.

MLA-Zitierstil (8. Ausg.)

Yuan, Zhi Hang. An Exploration of the Security Patrol System in Big Cities. 1993.