APA (7th ed.) Citation
Neumann, J. C. (2015). The book of GNS3: Build virtual network labs using Cisco, Juniper, and more. No Starch Press.
Chicago Style (17th ed.) Citation
Neumann, Jason C. The Book of GNS3: Build Virtual Network Labs Using Cisco, Juniper, and More. San Francisco, California: No Starch Press, 2015.
MLA (9th ed.) Citation
Neumann, Jason C. The Book of GNS3: Build Virtual Network Labs Using Cisco, Juniper, and More. No Starch Press, 2015.
Warning: These citations may not always be 100% accurate.