APA (7th ed.) Citation

Oldenbourg. (1971). The heirs of the Kingdom. Pantheon Books.

Chicago Style (17th ed.) Citation

Oldenbourg. The Heirs of the Kingdom. New York: Pantheon Books, 1971.

MLA (8th ed.) Citation

Oldenbourg. The Heirs of the Kingdom. Pantheon Books, 1971.

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