APA (7th ed.) Citation

Playfair, J. Illustrations of the Huttonian Theory of the Earth.

Chicago Style (17th ed.) Citation

Playfair, John. Illustrations of the Huttonian Theory of the Earth.

MLA (9th ed.) Citation

Playfair, John. Illustrations of the Huttonian Theory of the Earth.

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