APA
Parker C., . (2009). Zeitgeist 2. A2 WJEC self-study guide. Oxford: Oxford University Press.
Chicago
Parker Clare, . 2009. Zeitgeist 2. A2 WJEC self-study guide. Oxford: Oxford University Press.
Harvard
Parker C., . (2009). Zeitgeist 2. A2 WJEC self-study guide. Oxford: Oxford University Press.
MLA
Parker Clare, . Zeitgeist 2. A2 WJEC self-study guide. Oxford: Oxford University Press. 2009.