APA (7th ed.) Citation

Duncan, N. (2006). Doctor Luke of the Labrador. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duncan, Norman. Doctor Luke of the Labrador. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Duncan, Norman. Doctor Luke of the Labrador. Project Gutenberg, 2006.

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