Cita APA (7th ed.)

Pérez Verdín, G., Lee, M. E., & Chavez, D. J. (2016). Planning forest recreation in natural protected areas of southern Durango, Mexico. Instituto de Ecología, A.C.

Cita Chicago (17th ed.)

Pérez Verdín, Gustavo, Martha E. Lee, i Deborah J. Chavez. Planning Forest Recreation in Natural Protected Areas of Southern Durango, Mexico. Instituto de Ecología, A.C, 2016.

Cita MLA (9th ed.)

Pérez Verdín, Gustavo, et al. Planning Forest Recreation in Natural Protected Areas of Southern Durango, Mexico. Instituto de Ecología, A.C, 2016.