APA Style
Purkitt, Helen E. (2010).
Annual editions: world politics 09/10 (13th ED).
New York:
McGraw-Hill Higher Education.
Chicago Style
Purkitt, Helen E.
Annual editions: world politics 09/10.
13th ED
New York:
McGraw-Hill Higher Education,
2010.
Text.
MLA Style
Purkitt, Helen E.
Annual editions: world politics 09/10.
13th ED
New York:
McGraw-Hill Higher Education,
2010.
Text.
Turabian Style
Purkitt, Helen E.
Annual editions: world politics 09/10.
13th ED
New York:
McGraw-Hill Higher Education,
2010.
Print.