Zhang, R., Letham, D. S., Wong, O. C., Noodén, L. D., & Parker, C. W. (1987). Cytokinin Biochemistry in Relation to Leaf Senescence: II. The Metabolism of 6-Benzylaminopurine in Soybean Leaves and the Inhibition of Its Conjugation.

Zhang, Ren, David S. Letham, O. Choon Wong, Larry D. Noodén, and Charles W. Parker. Cytokinin Biochemistry in Relation to Leaf Senescence: II. The Metabolism of 6-Benzylaminopurine in Soybean Leaves and the Inhibition of Its Conjugation. 1987.

Zhang, Ren, et al. Cytokinin Biochemistry in Relation to Leaf Senescence: II. The Metabolism of 6-Benzylaminopurine in Soybean Leaves and the Inhibition of Its Conjugation. 1987.