APA (7th ed.) Citation

Hubert, H. (1993). The History of the Celtic people. Bracken Books.

Chicago Style (17th ed.) Citation

Hubert, Henri. The History of the Celtic People. London: Bracken Books, 1993.

MLA (9th ed.) Citation

Hubert, Henri. The History of the Celtic People. Bracken Books, 1993.

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