Doan, T. M., Mason, A. J., Castoe, T. A., Sasa Marín, M., & Parkinson, C. L. (2016). A cryptic palm-pitviper species (Squamata: Viperidae: Bothriechis) from the Costa Rican highlands, with notes on the variation within B. nigroviridis.

Doan, Tiffany M., Andrew J. Mason, Todd A. Castoe, Mahmood Sasa Marín, و Christopher L. Parkinson. A Cryptic Palm-pitviper Species (Squamata: Viperidae: Bothriechis) From the Costa Rican Highlands, With Notes On the Variation Within B. Nigroviridis. 2016.

Doan, Tiffany M., et al. A Cryptic Palm-pitviper Species (Squamata: Viperidae: Bothriechis) From the Costa Rican Highlands, With Notes On the Variation Within B. Nigroviridis. 2016.