Cita APA (7th ed.)

Palacios Chavez, R., & Rzedowski, J. (1993). Palynological study of the fossil floras of the Lower Miocene and early Middle Miocene of the Pichucalco region, Chiapas, Mexico. Instituto de Ecología, A.C.

Cita Chicago (17th ed.)

Palacios Chavez, Rodolfo, i Jerzy Rzedowski. Palynological Study of the Fossil Floras of the Lower Miocene and Early Middle Miocene of the Pichucalco Region, Chiapas, Mexico. Instituto de Ecología, A.C, 1993.

Cita MLA (9th ed.)

Palacios Chavez, Rodolfo, i Jerzy Rzedowski. Palynological Study of the Fossil Floras of the Lower Miocene and Early Middle Miocene of the Pichucalco Region, Chiapas, Mexico. Instituto de Ecología, A.C, 1993.