APA (7th ed.) Citation

Shelley, M. (2006). Frankenstein: Or the modern prometheus. Penguin Books.

Chicago Style (17th ed.) Citation

Shelley, Mary. Frankenstein: Or the Modern Prometheus. London: Penguin Books, 2006.

MLA (9th ed.) Citation

Shelley, Mary. Frankenstein: Or the Modern Prometheus. Penguin Books, 2006.

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