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.
Chicago Style (17th ed.) Citation胡卡比 and 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.
MLA (8th ed.) Citation胡卡比 and 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.
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