López-Portillo, J., Ezcurra, E., & Maass, J. M. (1989). The petenes of Sian Ka'an, Quintana Roo and their relationship with water pressure gradients. Instituto de Ecología, A.C.
Lua i Stíl Chicago (17ú heag.)López-Portillo, Jorge, Exequiel Ezcurra, agus José Manuel Maass. The Petenes of Sian Ka'an, Quintana Roo and Their Relationship with Water Pressure Gradients. Instituto de Ecología, A.C, 1989.
Lua MLA (9ú heag.)López-Portillo, Jorge, et al. The Petenes of Sian Ka'an, Quintana Roo and Their Relationship with Water Pressure Gradients. Instituto de Ecología, A.C, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
