APA (7th ed.) Citation

Open University (Great Britain). Earth's Physical Resources Course Team. (1973). Resources and systems. Open University Press.

Chicago Style (17th ed.) Citation

Open University (Great Britain). Earth's Physical Resources Course Team. Resources and Systems. Milton Keynes: Open University Press, 1973.

MLA (8th ed.) Citation

Open University (Great Britain). Earth's Physical Resources Course Team. Resources and Systems. Open University Press, 1973.

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