Styl cytowania APA

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

Styl cytowania Chicago

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

Styl cytowania MLA

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