Greer, A. (1992). A complete GCSE mathematics: Higher course (3rd ed.). Stanley Thornes.
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Chicago-čujuhus (17. p.)
Greer, A. A Complete GCSE Mathematics: Higher Course. 3rd ed. Wiltshire: Stanley Thornes, 1992.
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MLA-čujuhus (9. p.)
Greer, A. A Complete GCSE Mathematics: Higher Course. 3rd ed. Stanley Thornes, 1992.
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