Cita APA

Richard, J. D., & Hughes, D. A. Some observations of sea turtle nesting activity in Costa Rica. [S.l.]: [s.n.].

Citación estilo Chicago

Richard, J. D., y D. A. Hughes. Some Observations of Sea Turtle Nesting Activity in Costa Rica. [S.l.]: [s.n.].

Cita MLA

Richard, J. D., y D. A. Hughes. Some Observations of Sea Turtle Nesting Activity in Costa Rica. [S.l.]: [s.n.].