APA (7th ed.) Citation

Barber, N. W. (2018). The principles of constitutionalism / N.W. Barber. Oxford University Press.

Chicago Style (17th ed.) Citation

Barber, N. W. The Principles of Constitutionalism / N.W. Barber. Oxford: Oxford University Press, 2018.

MLA (9th ed.) Citation

Barber, N. W. The Principles of Constitutionalism / N.W. Barber. Oxford University Press, 2018.

Warning: These citations may not always be 100% accurate.