APA
Singapore Asian Publications (S) Pte, . (2004). Solutions to O-level classified mathematics step-by-step answers to unit 1A-13 according to "O-level classified mathematics lastest examination papers. Singapore: The Publications.
Chicago
Singapore Asian Publications (S) Pte, . 2004. Solutions to O-level classified mathematics step-by-step answers to unit 1A-13 according to "O-level classified mathematics lastest examination papers. Singapore: The Publications.
Harvard
Singapore Asian Publications (S) Pte, . (2004). Solutions to O-level classified mathematics step-by-step answers to unit 1A-13 according to "O-level classified mathematics lastest examination papers. Singapore: The Publications.
MLA
Singapore Asian Publications (S) Pte, . Solutions to O-level classified mathematics step-by-step answers to unit 1A-13 according to "O-level classified mathematics lastest examination papers. Singapore: The Publications. 2004.