APA (7th ed.) Citation

Bark, J., Hawcock, D., & Lawrence, D. (2008). Journal of inventions, Leonardo da Vinci. Silver Dolphin Books.

Chicago Style (17th ed.) Citation

Bark, Jaspre, David Hawcock, and David Lawrence. Journal of Inventions, Leonardo Da Vinci. San Diego: Silver Dolphin Books, 2008.

MLA (9th ed.) Citation

Bark, Jaspre, et al. Journal of Inventions, Leonardo Da Vinci. Silver Dolphin Books, 2008.