Cite
APA Citation
Beecher, J. A., Penna, J. A., & Bittinger, M. L. (2013). Precalculus : a right triangle approach. Harlow, United Kingdom : Pearson. http://access.bl.uk/ark:/81055/vdc_100048057580.0x000001
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Beecher, J. A., Penna, J. A., & Bittinger, M. L. (2013). Precalculus : a right triangle approach. Harlow, United Kingdom : Pearson. http://access.bl.uk/ark:/81055/vdc_100048057580.0x000001