A tramp abroad /
[by] Mark Twain ; illustrated by David Knight and including several pictures made by the author of this book without outside help ; with an introd. by Edward Wagenknecht.

APA Citation

Twain, M., Knight, D. (1966). A tramp abroad. New York: Heritage Press.

MLA Citation

Twain, Mark, 1835-1910, and David Knight. A Tramp Abroad. New York: Heritage Press, 1966.

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