APA
Harrison R. (., Harrogate S. (., Oxley s. (., Ryan D. (., Simpson C. (. & Wilbourne R. (. (2015). GCSE Edexcel mathematics for the grade 9-1 course: Exam practical workbook foundation level. Newcastle: Coordination group publication.
Chicago
Harrison Rob (e.d), Harrogate Shaun (e.d), Oxley sarah (e.d), Ryan David (e.d), Simpson Caley (e.d) and Wilbourne Ruth (e.d). 2015. GCSE Edexcel mathematics for the grade 9-1 course: Exam practical workbook foundation level. Newcastle: Coordination group publication.
Harvard
Harrison R. (., Harrogate S. (., Oxley s. (., Ryan D. (., Simpson C. (. and Wilbourne R. (. (2015). GCSE Edexcel mathematics for the grade 9-1 course: Exam practical workbook foundation level. Newcastle: Coordination group publication.
MLA
Harrison Rob (e.d), Harrogate Shaun (e.d), Oxley sarah (e.d), Ryan David (e.d), Simpson Caley (e.d) and Wilbourne Ruth (e.d). GCSE Edexcel mathematics for the grade 9-1 course: Exam practical workbook foundation level. Newcastle: Coordination group publication. 2015.