Leverage Points: Places to Intervene in a System - The Donella Meadows Project. www.donellameadows.org [online]. [cit. 2018-06-14]. Dostupné online. (anglicky)
mit.edu
web.mit.edu
TANG, Victor; VIJAY, Samudra. System Dynamics: Origins, development, and future prospects of a method. 1. vyd. Massatchusetts: Massatchusetts Institute of Technology, 2001. Dostupné online.
thwink.org
Leverage Point - Tool/Concept/Definition. www.thwink.org [online]. [cit. 2018-06-14]. Dostupné online.