APA
Duncan T., Kennett H., . (2008). IGCSE physics. London: Hodder Education.
Chicago
Duncan Tom, Kennett Heather, . 2008. IGCSE physics. London: Hodder Education.
Harvard
Duncan T., Kennett H., . (2008). IGCSE physics. London: Hodder Education.
MLA
Duncan Tom, Kennett Heather, . IGCSE physics. London: Hodder Education. 2008.