Cita APA

Campbell, J. A., & Smith, E. N. (2000). A new species of arboreal pitviper from the Atlantic versant of northern Central America. Universidad de Costa Rica.

Citación estilo Chicago

Campbell, Jonathan A., y Eric N. Smith. A New Species of Arboreal Pitviper From the Atlantic Versant of Northern Central America. Universidad de Costa Rica, 2000.

Cita MLA

Campbell, Jonathan A., y Eric N. Smith. A New Species of Arboreal Pitviper From the Atlantic Versant of Northern Central America. Universidad de Costa Rica, 2000.