APA (7th ed.) Citation

The Open University. a second level course. (1973). Solids, liquids and gases. Open University Press.

Chicago Style (17th ed.) Citation

The Open University. a second level course. Solids, Liquids and Gases. Milton Keynes: Open University Press, 1973.

MLA (9th ed.) Citation

The Open University. a second level course. Solids, Liquids and Gases. Open University Press, 1973.

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