What is man? /
by Mark Twain.

APA Citation

Twain, M., Rationalist Press Association. (1910). What is man? London: Watts & Co..

MLA Citation

Twain, Mark, 1835-1910, and Rationalist Press Association. What Is Man? London: Watts & Co., 1910.

Warning: These citations may not always be complete (especially for serials).