APA (7th ed.) Citation

Owen, D. F. (1980). What is ecology? / (by) D.F. Owen (2nd ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Owen, D. F. What Is Ecology? / (by) D.F. Owen. 2nd ed. Oxford (etc.): Oxford University Press, 1980.

MLA (9th ed.) Citation

Owen, D. F. What Is Ecology? / (by) D.F. Owen. 2nd ed. Oxford University Press, 1980.

Warning: These citations may not always be 100% accurate.