Empson, S. (2020). CCNA 200-301 portable command guide (Fifth edition.). Cisco Press.
芝加哥风格引文Empson, Scott. CCNA 200-301 Portable Command Guide. Fifth edition. San Jose, CA: Cisco Press, 2020.
MLA引文Empson, Scott. CCNA 200-301 Portable Command Guide. Fifth edition. Cisco Press, 2020.
警告：这些引文格式不一定是100％准确.