MLA
Pulkkis, Göran, Kaj J. Grahn and Peik Åström. "Network Security Software." Current Security Management & Ethical Issues of Information Technology. IGI Global, 2003. 1-41. Web. 14 Dec. 2019. doi:10.4018/978-1-93177-743-8.ch001
APA
Pulkkis, G., Grahn, K. J., & Åström, P. (2003). Network Security Software. In R. Azari (Ed.), Current Security Management & Ethical Issues of Information Technology (pp. 1-41). Hershey, PA: IGI Global. doi:10.4018/978-1-93177-743-8.ch001
Chicago
Pulkkis, Göran, Kaj J. Grahn and Peik Åström. "Network Security Software." In Current Security Management & Ethical Issues of Information Technology, ed. Rasool Azari, 1-41 (2003), accessed December 14, 2019. doi:10.4018/978-1-93177-743-8.ch001
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