APA (7th ed.) Citation

Greenhalgh, P. (2000). "A great seriousness": Art Nouveau and the status of style.

Chicago Style (17th ed.) Citation

Greenhalgh, Paul. "A Great Seriousness": Art Nouveau and the Status of Style. 2000.

MLA (9th ed.) Citation

Greenhalgh, Paul. "A Great Seriousness": Art Nouveau and the Status of Style. 2000.

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