APA (7th ed.) Citation

Barber, H. (1997). The Aeroplane Speaks. Project Gutenberg.

Chicago Style (17th ed.) Citation

Barber, H. The Aeroplane Speaks. Project Gutenberg, 1997.

MLA (9th ed.) Citation

Barber, H. The Aeroplane Speaks. Project Gutenberg, 1997.

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