Stewart, E. L. (2020). CCNA Security - The smart way to study. Pearson Education.
शिकागो स्टाइल उद्धरणStewart, Eric L. CCNA Security - The Smart Way to Study. Pearson Education, 2020.
एमएलए उद्धरणStewart, Eric L. CCNA Security - The Smart Way to Study. Pearson Education, 2020.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.