APA (7th ed.) Citation

Trimmer, H. W. (1999). Understanding and servicing alarm systems (3rd ed.). Butterworth-Heinemann.

Chicago Style (17th ed.) Citation

Trimmer, H. William. Understanding and Servicing Alarm Systems. 3rd ed. Boston, Mass. ; London: Butterworth-Heinemann, 1999.

MLA (8th ed.) Citation

Trimmer, H. William. Understanding and Servicing Alarm Systems. 3rd ed. Butterworth-Heinemann, 1999.