APA (7th ed.) Citation

Lighton, W. R. Lewis and Clark Meriwether Lewis and William Clark.

Chicago Style (17th ed.) Citation

Lighton, William R. Lewis and Clark Meriwether Lewis and William Clark.

MLA (9th ed.) Citation

Lighton, William R. Lewis and Clark Meriwether Lewis and William Clark.

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