Developed by the school of environment at Griffith University for environmental science students, this resource shows how to systematically search the literature using online databases; save and manage the information and quantify the current status of the literature.
Collaboration for environmental evidence. 2013. Guidelines for systematic review and evidence synthesis in environmental management. Version 4.2.
http://environmentalevidence.org/wp-content/uploads/2014/06/Review-guidelinesversion-4.2-finalPRINT.pdf