Cita APA

Birks, H., & Willis, K. (2008). Alpines, trees, and refugia in Europe.

Citación estilo Chicago

Birks, H., and K. Willis. Alpines, Trees, and Refugia in Europe. 2008.

Cita MLA

Birks, H., and K. Willis. Alpines, Trees, and Refugia in Europe. 2008.

Warning: These citations may not always be 100% accurate.