APA (7e ed.) Bronvermelding

Butlin, R. A., & Roberts, N. (1995). Ecological relations in historical times: Human impact and adaptation. Blackwell.

Chicago (17e ed.) Bronvermelding

Butlin, R. A., en Neil Roberts. Ecological Relations in Historical Times: Human Impact and Adaptation. Oxford: Blackwell, 1995.

MLA (9e ed.) Bronvermelding

Butlin, R. A., en Neil Roberts. Ecological Relations in Historical Times: Human Impact and Adaptation. Blackwell, 1995.