APA (7th ed.) Citation

Smiles, S. Lives of the Engineers The Locomotive. George and Robert Stephenson.

Chicago Style (17th ed.) Citation

Smiles, Samuel. Lives of the Engineers The Locomotive. George and Robert Stephenson.

MLA (9th ed.) Citation

Smiles, Samuel. Lives of the Engineers The Locomotive. George and Robert Stephenson.

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