APA Citation

Mayall, J., & Blumenberg, W. Portrait Karl Marx: In London. Original photo. Compare BG A9/363.

Chicago Style Citation

Mayall, John, and Werner Blumenberg. Portrait Karl Marx: In London. Original Photo. Compare BG A9/363.

MLA Citation

Mayall, John, and Werner Blumenberg. Portrait Karl Marx: In London. Original Photo. Compare BG A9/363.

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