APA

Benítez S., . (2001). Visitor use fees and concession systems in protected areas: Galápagos National Park, Ecuador. Arlington, VA: The Nature Conservancy.

Chicago

Benítez Silvia, . 2001. Visitor use fees and concession systems in protected areas: Galápagos National Park, Ecuador. Arlington, VA: The Nature Conservancy.

Harvard

Benítez S., . (2001). Visitor use fees and concession systems in protected areas: Galápagos National Park, Ecuador. Arlington, VA: The Nature Conservancy.

MLA

Benítez Silvia, . Visitor use fees and concession systems in protected areas: Galápagos National Park, Ecuador. Arlington, VA: The Nature Conservancy. 2001.