APA (7th ed.) Citation

Lydekker, R. (1893). The royal natural history. F. Warne.

Chicago Style (17th ed.) Citation

Lydekker, Richard. The Royal Natural History. London, etc.: F. Warne, 1893.

MLA (9th ed.) Citation

Lydekker, Richard. The Royal Natural History. F. Warne, 1893.