APA (7th ed.) Citation

Petrie, C. (1961). The modern British monarchy. Eyre & Spottiswoode.

Chicago Style (17th ed.) Citation

Petrie, Charles. The Modern British Monarchy. London: Eyre & Spottiswoode, 1961.

MLA (9th ed.) Citation

Petrie, Charles. The Modern British Monarchy. Eyre & Spottiswoode, 1961.

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