Παραπομπή APA

Verba,Sidney, & Nie,Norman H. (1978). Participation and political equality: A seven - nation comparison. Cambridge University Press.

Παραπομπή Chicago Style

Verba,Sidney, και Nie,Norman H. Participation and Political Equality: A Seven - Nation Comparison. Cambridge: Cambridge University Press, 1978.

Παραπομπή MLA

Verba,Sidney, και Nie,Norman H. Participation and Political Equality: A Seven - Nation Comparison. Cambridge University Press, 1978.