APA (7th ed.) Citation

Penny Johnson, Sue Kearsey, & Riddle, D. (2012). Additional Science: Revision Guide. Pearson Educational Limited.

Chicago Style (17th ed.) Citation

Penny Johnson, Sue Kearsey, and Damian Riddle. Additional Science: Revision Guide. Pearson Educational Limited, 2012.

MLA (9th ed.) Citation

Penny Johnson, et al. Additional Science: Revision Guide. Pearson Educational Limited, 2012.