APA (7th ed.) Citation

Hall, U., & Seward, I. (1988). By royal invitation. Sidgwick & Jackson.

Chicago Style (17th ed.) Citation

Hall, Unity, and Ingrid Seward. By Royal Invitation. London: Sidgwick & Jackson, 1988.

MLA (9th ed.) Citation

Hall, Unity, and Ingrid Seward. By Royal Invitation. Sidgwick & Jackson, 1988.