Coppen, A., Swade, C., Jones, S., Armstrong, R., Blair, J., & Leeming, R. (1989). Depression and tetrahydrobiopterin: The folate connection.

Coppen, A., C. Swade, SA Jones, R. Armstrong, J. Blair, and R. Leeming. Depression and Tetrahydrobiopterin: The Folate Connection. 1989.

Coppen, A., et al. Depression and Tetrahydrobiopterin: The Folate Connection. 1989.