APA aipamena

GATES BILL. (1995). ROAD AHEAD. PENGUIN BOOKS.

Chicago Style aipamena

GATES BILL. ROAD AHEAD. ENGLAND: PENGUIN BOOKS, 1995.

MLA aipamena

GATES BILL. ROAD AHEAD. PENGUIN BOOKS, 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.