APA (7th ed.) Citation

Smith, L. B. (1966). This realm of England, 1399-1688. Heath.

Chicago Style (17th ed.) Citation

Smith, Lacey Baldwin. This Realm of England, 1399-1688. Boston: Heath, 1966.

MLA (9th ed.) Citation

Smith, Lacey Baldwin. This Realm of England, 1399-1688. Heath, 1966.

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