APA (7th ed.) Citation

Jennifer Gray & Amanda Swift. (2012). Guinea Pigs Online (1st.). Quercus.

Chicago Style (17th ed.) Citation

Jennifer Gray and Amanda Swift. Guinea Pigs Online. 1st. UK: Quercus, 2012.

MLA (9th ed.) Citation

Jennifer Gray and Amanda Swift. Guinea Pigs Online. 1st. Quercus, 2012.

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