APA (7th ed.) Citation

Open University. (1973). Phase diagrams and microstructure unit 5. Open University Press.

Chicago Style (17th ed.) Citation

Open University. Phase Diagrams and Microstructure Unit 5. [London], Milton Keynes: Open University Press, 1973.

MLA (9th ed.) Citation

Open University. Phase Diagrams and Microstructure Unit 5. Open University Press, 1973.