APA (7th ed.) Citation

Royston. (2008). Natural and man-made. Heinemann Library.

Chicago Style (17th ed.) Citation

Royston. Natural and Man-made. Oxford: Heinemann Library, 2008.

MLA (8th ed.) Citation

Royston. Natural and Man-made. Heinemann Library, 2008.

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