Troëng, S., Mangel, J., Kélez, S., Myers, A., & Kashner, J. (2000). Report on the 1999 Green Turtle Program at Tortuguero, Costa Rica. San Pedro, Costa Rica: Caribbean Conservation Corporation.

Troëng, Sebastián, Jeff Mangel, Shaleyla Kélez, Andy Myers, and James Kashner. Report On the 1999 Green Turtle Program At Tortuguero, Costa Rica. San Pedro, Costa Rica: Caribbean Conservation Corporation, 2000.

Troëng, Sebastián, et al. Report On the 1999 Green Turtle Program At Tortuguero, Costa Rica. San Pedro, Costa Rica: Caribbean Conservation Corporation, 2000.