Taylor, N.P. (March 2011). "Cipocereus bradei". Cactus and Succulent Journal. 81 (2). Archived from the original on 5 November 2013. Retrieved 5 November 2013.
Taylor, N.P. (March 2011). "Cipocereus bradei". Cactus and Succulent Journal. 81 (2). Archived from the original on 5 November 2013. Retrieved 5 November 2013.