Frost & Sullivan. (2004). List of approved fire and security products and services: Red book ; v.1. BRE Certification Ltd.
Lua i Stíl Chicago (17ú heag.)Frost & Sullivan. List of Approved Fire and Security Products and Services: Red Book ; V.1. United Kingdom: BRE Certification Ltd, 2004.
Lua MLA (9ú heag.)Frost & Sullivan. List of Approved Fire and Security Products and Services: Red Book ; V.1. BRE Certification Ltd, 2004.
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