APA (7th ed.) Citation

Oliver, S. (1997). An introduction to heraldry. Grange Books.

Chicago Style (17th ed.) Citation

Oliver, Stefan. An Introduction to Heraldry. London: Grange Books, 1997.

MLA (9th ed.) Citation

Oliver, Stefan. An Introduction to Heraldry. Grange Books, 1997.

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