APA (7th ed.) Citation

Adam Matthew Digital (Firm). (2018). Art nouveau postcards and trade cards. Adam Matthew Digital.

Chicago Style (17th ed.) Citation

Adam Matthew Digital (Firm). Art Nouveau Postcards and Trade Cards. Marlborough, Wiltshire: Adam Matthew Digital, 2018.

MLA (9th ed.) Citation

Adam Matthew Digital (Firm). Art Nouveau Postcards and Trade Cards. Adam Matthew Digital, 2018.

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