APA Citation

Barker, K. (2013). CCNA Security 640-554: Official cert guide. Indianapolis: Ciscopress.

Chicago Style Citation

Barker, Keith. CCNA Security 640-554: Official Cert Guide. Indianapolis: Ciscopress, 2013.

MLA Citation

Barker, Keith. CCNA Security 640-554: Official Cert Guide. Indianapolis: Ciscopress, 2013.

Warning: These citations may not always be 100% accurate.