APA Style

Gilman, E., Barth, D. (2017). Zero trust networks: building secure systems in untrusted networks (First edition). United States of America: O'Reilly Media.

MLA Style

Gilman, Evan., Barth, Doug. "Zero trust networks: building secure systems in untrusted networks". First edition United States of America: O'Reilly Media, 2017. Print.