Cita APA (7a ed.)

Cole, J. W., & Wolf, E. R. (1999). The hidden frontier: Ecology and ethnicity in an alpine valley. University of California Press.

Cita Chicago Style (17a ed.)

Cole, John W., y Eric Robert Wolf. The Hidden Frontier: Ecology and Ethnicity in an Alpine Valley. Berkeley [etc.]: University of California Press, 1999.

Cita MLA (9a ed.)

Cole, John W., y Eric Robert Wolf. The Hidden Frontier: Ecology and Ethnicity in an Alpine Valley. University of California Press, 1999.