APA (7th ed.) Citation

Gregory, O. B., Kesteven, P., & Winters, S. (1977). Edward VI and Mary. Wheaton.

Chicago Style (17th ed.) Citation

Gregory, O. B., Peter Kesteven, and Susan Winters. Edward VI and Mary. Exeter: Wheaton, 1977.

MLA (9th ed.) Citation

Gregory, O. B., et al. Edward VI and Mary. Wheaton, 1977.