Sittenfeld, A., Vargas, M., Sánchez, E., Mora, M., & Serrano, A. (2004). Anew species of euglena isolated from a hot and acid mud pool located in Las Pailas de Barro, Volcán Rincón de la Vieja, Costa Rica.

Sittenfeld, Ana, Maribelle Vargas, Ethel Sánchez, Marielos Mora, y Aurelio Serrano. Anew Species of Euglena Isolated From a Hot and Acid Mud Pool Located in Las Pailas De Barro, Volcán Rincón De La Vieja, Costa Rica. 2004.

Sittenfeld, Ana, et al. Anew Species of Euglena Isolated From a Hot and Acid Mud Pool Located in Las Pailas De Barro, Volcán Rincón De La Vieja, Costa Rica. 2004.