APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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