APA
Pettersson I. C., Weeks C. A., Norman K. I. & Nicol C. J. (2017). The ability of laying pullets to negotiate two ramp designs as measured by bird preference and behaviour. : PeerJ.
Chicago
Pettersson Isabelle C, Weeks Claire A, Norman Kate I and Nicol Christine J. 2017. The ability of laying pullets to negotiate two ramp designs as measured by bird preference and behaviour. : PeerJ.
Harvard
Pettersson I. C., Weeks C. A., Norman K. I. and Nicol C. J. (2017). The ability of laying pullets to negotiate two ramp designs as measured by bird preference and behaviour. : PeerJ.
MLA
Pettersson Isabelle C, Weeks Claire A, Norman Kate I and Nicol Christine J. The ability of laying pullets to negotiate two ramp designs as measured by bird preference and behaviour. : PeerJ. 2017.