APA (7th ed.) Citation

(1887). Waldheim-monument for the martyrs of Chicago. Series of 2 photos.

Chicago Style (17th ed.) Citation

Waldheim-monument for the Martyrs of Chicago. Series of 2 Photos. 1887.

MLA (8th ed.) Citation

Waldheim-monument for the Martyrs of Chicago. Series of 2 Photos. 1887.

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