Takeda, Michio, Ikuo Kiyatake, Hikaru Koide, et al. "Biosynthesis of Guanidinoacetic Acid in Isolated Renal Tubules" Clinical Chemistry and Laboratory Medicine, 30.6 (2009): 325-332. Retrieved 18 May. 2013, from doi:10.1515/cclm.1992.30.6.325

Takeda, M., Kiyatake, I., Koide, H., et al. (2009). Biosynthesis of Guanidinoacetic Acid in Isolated Renal Tubules. Clinical Chemistry and Laboratory Medicine, 30(6), pp. 319-379. Retrieved 18 May. 2013, from doi:10.1515/cclm.1992.30.6.325

Takeda, Michio, Ikuo Kiyatake, Hikaru Koide, et al. 2009. Biosynthesis of Guanidinoacetic Acid in Isolated Renal Tubules. Clinical Chemistry and Laboratory Medicine. 30(6): 319-379. Retrieved 18 May. 2013, from doi:10.1515/cclm.1992.30.6.325