APA
HEYWOOD A., . (1997). POLITICS. new york: PAIGRAVE, MACMILLAN.
Chicago
HEYWOOD ANDREW, . 1997. POLITICS. new york: PAIGRAVE, MACMILLAN.
Harvard
HEYWOOD A., . (1997). POLITICS. new york: PAIGRAVE, MACMILLAN.
MLA
HEYWOOD ANDREW, . POLITICS. new york: PAIGRAVE, MACMILLAN. 1997.