APA (7th ed.) Citation

Priestley, J. B. (1974). Victoria's heyday. Penguin.

Chicago Style (17th ed.) Citation

Priestley, J. B. Victoria's Heyday. Harmondsworth [etc.]: Penguin, 1974.

MLA (8th ed.) Citation

Priestley, J. B. Victoria's Heyday. Penguin, 1974.

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