APA (7th ed.) Citation

(1914). Series of 2 pictures. Hornabrook sitting in the middle.

Chicago Style (17th ed.) Citation

Series of 2 Pictures. Hornabrook Sitting in the Middle. 1914.

MLA (8th ed.) Citation

Series of 2 Pictures. Hornabrook Sitting in the Middle. 1914.

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