Purba, H. S., Maggs, J. L., Orme, M. L., Back, D. J., & Park, B. K. (1987). The metabolism of 17 alpha-ethinyloestradiol by human liver microsomes: Formation of catechol and chemically reactive metabolites.

Purba, H S., J L. Maggs, M L. Orme, D J. Back, and B K. Park. The Metabolism of 17 Alpha-ethinyloestradiol By Human Liver Microsomes: Formation of Catechol and Chemically Reactive Metabolites. 1987.

Purba, H S., et al. The Metabolism of 17 Alpha-ethinyloestradiol By Human Liver Microsomes: Formation of Catechol and Chemically Reactive Metabolites. 1987.