Cita APA (7a ed.)

Amanda Lawrence, Paul Weldon, Julian Thomas, & John Houghton. Where is the evidence: Realising the value of grey literature for public policy and practice.

Cita Chicago Style (17a ed.)

Amanda Lawrence, Paul Weldon, Julian Thomas, y John Houghton. Where Is the Evidence: Realising the Value of Grey Literature for Public Policy and Practice.

Cita MLA (9a ed.)

Amanda Lawrence, et al. Where Is the Evidence: Realising the Value of Grey Literature for Public Policy and Practice.