APA (7th ed.) Citation

Sweetser, M. F. (2010). Dürer Artist-Biographies. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sweetser, M. F. Dürer Artist-Biographies. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Sweetser, M. F. Dürer Artist-Biographies. Project Gutenberg, 2010.

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