Citazione APA

Open Universityearth's Physical Resources Course Team & Open University, E. P. (1974). Implications. Open university press.

Stile di citazione Chicago

Open Universityearth's Physical Resources Course Team e Earth's Physic Open University. Implications. Open university press, 1974.

Citazione MLA

Open Universityearth's Physical Resources Course Team e Earth's Physic Open University. Implications. Open university press, 1974.