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APA Citation
Ng, N. T., Sanagi, M. M., Wan Ibrahim, W. N., & Wan Ibrahim, W. A. (2017). agarose-chitosan-C18 film micro-solid phase extraction combined with high performance liquid chromatography for the determination of phenanthrene and pyrene in chrysanthemum tea samples. Food chemistry, 222, 28–34. http://access.bl.uk/ark:/81055/vdc_100039990325.0x000044