APA (7th ed.) Citation

Aldrich, R. J., Title, & Cormac, R. (2021). The secret royals: Spying and the crown, from Victoria to Diana. Areca Books.

Chicago Style (17th ed.) Citation

Aldrich, Richard J., Title, and Rory Cormac. The Secret Royals: Spying and the Crown, from Victoria to Diana. Penang: Areca Books, 2021.

MLA (9th ed.) Citation

Aldrich, Richard J., et al. The Secret Royals: Spying and the Crown, from Victoria to Diana. Areca Books, 2021.