Hajek, A. E. (2004). Natural enemies: An introduction to biological control. Cambridge, UK: Cambridge University Press.
शिकागो स्टाइल उद्धरणHajek, Ann E. Natural Enemies: An Introduction to Biological Control. Cambridge, UK: Cambridge University Press, 2004.
एमएलए उद्धरणHajek, Ann E. Natural Enemies: An Introduction to Biological Control. Cambridge, UK: Cambridge University Press, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.