APA

Calafat A. M., Barr D. B., Pirkle J. L. & Ashley D. L. (19991021). Reference range concentrations of N-acetyl-S-(2-hydroxyethyl)-L-cysteine, a common metabolite of several volatile organic compounds, in the urine of adults in the United States. : Journal of exposure analysis and environmental epidemiology.

Chicago

Calafat A M, Barr D B, Pirkle J L and Ashley D L. 19991021. Reference range concentrations of N-acetyl-S-(2-hydroxyethyl)-L-cysteine, a common metabolite of several volatile organic compounds, in the urine of adults in the United States. : Journal of exposure analysis and environmental epidemiology.

Harvard

Calafat A. M., Barr D. B., Pirkle J. L. and Ashley D. L. (19991021). Reference range concentrations of N-acetyl-S-(2-hydroxyethyl)-L-cysteine, a common metabolite of several volatile organic compounds, in the urine of adults in the United States. : Journal of exposure analysis and environmental epidemiology.

MLA

Calafat A M, Barr D B, Pirkle J L and Ashley D L. Reference range concentrations of N-acetyl-S-(2-hydroxyethyl)-L-cysteine, a common metabolite of several volatile organic compounds, in the urine of adults in the United States. : Journal of exposure analysis and environmental epidemiology. 19991021.