CGP. GCSE Mathemathics: The Revision Guide. Coordination Group Publications.
Chicago Style (17th ed.) CitationCGP. GCSE Mathemathics: The Revision Guide. United Kingdom: Coordination Group Publications.
MLA (9th ed.) CitationCGP. GCSE Mathemathics: The Revision Guide. Coordination Group Publications.
Warning: These citations may not always be 100% accurate.