Citizen's Security & Investigation is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Private Investigators
• Security Systems & Consultants

North American Industry Classification System (NAICS) Categories:

• Other Scientific And Technical Consulting Services > Consultants Security & Safety
• Investigation Services > Investigators & Detective Services, Private > Private Investigators

Standard Industry Classification (SIC) Categories:

• Detective Guard & Armored Car Services > Investigators & Detective Services, Private > Private Investigators
• Business Consulting Services, Nec > Consultants Security & Safety