@article{Schmale_2018, title={Derek Heater, The Idea of European Unity, Leicester, London:: Leicester University Press (Pinter Publishers) 1992}, volume={3}, url={https://www.comparativ.net/v2/article/view/2247}, number={4}, journal={Comparativ}, author={Schmale, Wolfgang}, year={2018}, month={Mar.}, pages={191–192} }