Παραπομπή APA

Calvert, P., & Calvert,Susan. (1999). The South, the North, and the environment. Pinter.

Παραπομπή Chicago Style

Calvert, Peter, και Calvert,Susan. The South, the North, and the Environment. London: Pinter, 1999.

Παραπομπή MLA

Calvert, Peter, και Calvert,Susan. The South, the North, and the Environment. Pinter, 1999.