APA (7th ed.) Citation

Gough, D., Oliver, S., & Thomas, J. (2017). An introduction to systematic reviews (2nd edition.). SAGE.

Chicago Style (17th ed.) Citation

Gough, David, Sandy Oliver, and James Thomas. An Introduction to Systematic Reviews. 2nd edition. Los Angeles London New Delhi Singapore Washington, DC Melbourne: SAGE, 2017.

MLA (8th ed.) Citation

Gough, David, et al. An Introduction to Systematic Reviews. 2nd edition. SAGE, 2017.