Romero Rangel, S., & Rojas Zenteno, E. C. (1991). Floristic study of the Huehuetoca region, State of Mexico. Instituto de Ecología, A.C.
Chicago Style aipamenaRomero Rangel, Silvia, and E. Carlos Rojas Zenteno. Floristic Study of the Huehuetoca Region, State of Mexico. Instituto de Ecología, A.C, 1991.
MLA aipamenaRomero Rangel, Silvia, and E. Carlos Rojas Zenteno. Floristic Study of the Huehuetoca Region, State of Mexico. Instituto de Ecología, A.C, 1991.