APA (7th ed.) Citation

Appleton, V., II. (2006). Tom Swift and The Visitor from Planet X. Project Gutenberg.

Chicago Style (17th ed.) Citation

Appleton, Victor, II. Tom Swift and The Visitor from Planet X. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Appleton, Victor, II. Tom Swift and The Visitor from Planet X. Project Gutenberg, 2006.

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