APA (7th ed.) Citation

Berger, R. (1973). Impeachment: The constitutional problems. Harvard University Press.

Chicago Style (17th ed.) Citation

Berger, Raoul. Impeachment: The Constitutional Problems. Cambridge: Harvard University Press, 1973.

MLA (9th ed.) Citation

Berger, Raoul. Impeachment: The Constitutional Problems. Harvard University Press, 1973.