APA
Duncan T., Kennett H., . (2009). IGCSE physics. London: Hodder Murray.
Chicago
Duncan Tom, Kennett Heather, . 2009. IGCSE physics. London: Hodder Murray.
Harvard
Duncan T., Kennett H., . (2009). IGCSE physics. London: Hodder Murray.
MLA
Duncan Tom, Kennett Heather, . IGCSE physics. London: Hodder Murray. 2009.