APA (7th ed.) Citation

Duncan, N. Billy Topsail, M.D: A Tale of Adventure With Doctor Luke of the Labrador.

Chicago Style (17th ed.) Citation

Duncan, Norman. Billy Topsail, M.D: A Tale of Adventure With Doctor Luke of the Labrador.

MLA (9th ed.) Citation

Duncan, Norman. Billy Topsail, M.D: A Tale of Adventure With Doctor Luke of the Labrador.

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