APA (7th ed.) Citation

(1904). Handwritten right above: (A. Hertwig ?)/ 1904.

Chicago Style (17th ed.) Citation

Handwritten Right Above: (A. Hertwig ?)/ 1904. 1904.

MLA (8th ed.) Citation

Handwritten Right Above: (A. Hertwig ?)/ 1904. 1904.

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