Cita APA (7a ed.)

Whelan, T. (1991). Nature tourism: Managing for the environment. Island.

Cita Chicago Style (17a ed.)

Whelan, Tensie. Nature Tourism: Managing for the Environment. Washington: Island, 1991.

Cita MLA (9a ed.)

Whelan, Tensie. Nature Tourism: Managing for the Environment. Island, 1991.