APA (7th ed.) Citation

Bureau Development, Inc. (1993). Twain's world (Single-user version.). Bureau Development.

Chicago Style (17th ed.) Citation

Bureau Development, Inc. Twain's World. Single-user version. Parsippany, NJ: Bureau Development, 1993.

MLA (9th ed.) Citation

Bureau Development, Inc. Twain's World. Single-user version. Bureau Development, 1993.

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