APA (7th ed.) Citation

Owen, D. F. (1974). What is ecology? Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Owen, Denis F. What Is Ecology? London [u.a.]: Oxford Univ. Press, 1974.

MLA (9th ed.) Citation

Owen, Denis F. What Is Ecology? Oxford Univ. Press, 1974.

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