APA aipamena

Polsby, N. W. (1989). Congress and the Presidency (4th ed.). Prentice-Hall of India.

Chicago Style aipamena

Polsby, Nelson W. Congress and the Presidency. 4th ed. New Delhi: Prentice-Hall of India, 1989.

MLA aipamena

Polsby, Nelson W. Congress and the Presidency. 4th ed. Prentice-Hall of India, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.