APA (7th ed.) Citation

(1898). Two photographs of African American students studying chemistry in 1898. [publisher not identified].

Chicago Style (17th ed.) Citation

Two Photographs of African American Students Studying Chemistry in 1898. [United States]: [publisher not identified], 1898.

MLA (9th ed.) Citation

Two Photographs of African American Students Studying Chemistry in 1898. [publisher not identified], 1898.

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