Marshall, Tim: A Flag Worth Dying For: The Power and Politics of National Symbols (Politics of Place), s. 109-110. Scribner, 2018. ISBN 978-1501168345. Teoksen verkkoversio.
Triandafyllidou, Anna: Global Governance from Regional Perspectives: A Critical View, s. 117. Oxford University Press, 2017. ISBN 978-0198793342. Teoksen verkkoversio.