Style de citation APA (7e éd.)

Letchworth, W. P. (1889). The insane in foreign countries. G. P. Putnam's sons.

Style de citation Chicago (17e éd.)

Letchworth, William Pryor. The Insane in Foreign Countries. New York & London: G. P. Putnam's sons, 1889.

Style de citation MLA (8e éd.)

Letchworth, William Pryor. The Insane in Foreign Countries. G. P. Putnam's sons, 1889.