APA (7th ed.) Citation

Gallagher, S., & Smith, H. (2008). The ultimate history of Porsche. Parragon.

Chicago Style (17th ed.) Citation

Gallagher, Stuart, and Helen Smith. The Ultimate History of Porsche. UK: Parragon, 2008.

MLA (9th ed.) Citation

Gallagher, Stuart, and Helen Smith. The Ultimate History of Porsche. Parragon, 2008.