APA (7th ed.) Citation

Upton, J., & Maclaren, E. (2007). Porbeagle shark in the North Sea. Shell.

Chicago Style (17th ed.) Citation

Upton, Jon, and E. Maclaren. Porbeagle Shark in the North Sea. Shell, 2007.

MLA (9th ed.) Citation

Upton, Jon, and E. Maclaren. Porbeagle Shark in the North Sea. Shell, 2007.

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