胡卡比 & 加诺. (2013). CCNP安全防火墙642-618认证考试指南: CCNP security FIREWALL 642-618 of ficial cert guide. 人民邮电出版社.
Lua i Stíl Chicago (17ú heag.)胡卡比 agus 加诺. CCNP安全防火墙642-618认证考试指南: CCNP Security FIREWALL 642-618 of Ficial Cert Guide. 人民邮电出版社, 2013.
Lua MLA (8ú heag.)胡卡比 agus 加诺. CCNP安全防火墙642-618认证考试指南: CCNP Security FIREWALL 642-618 of Ficial Cert Guide. 人民邮电出版社, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.