McLennan, Lt-Col Ben (24 March 2016). "Optimal Performance"(PDF). Army: The Soldiers' Newspaper (1369 ed.). Canberra: Department of Defence. ISSN0729-5685. Retrieved 21 November 2019.
McLennan, Lt-Col Ben (24 March 2016). "Optimal Performance"(PDF). Army: The Soldiers' Newspaper (1369 ed.). Canberra: Department of Defence. ISSN0729-5685. Retrieved 21 November 2019.