APA (7th ed.) Citation

Wittlich, P. (1974). Art nouveau drawings .... Octopus Books.

Chicago Style (17th ed.) Citation

Wittlich, Petr. Art Nouveau Drawings .... London: Octopus Books, 1974.

MLA (9th ed.) Citation

Wittlich, Petr. Art Nouveau Drawings .... Octopus Books, 1974.

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