APA (7th ed.) Citation

Gifford, C., Kennedy, S., & Parker, P. (2017). Science year by year. Dorling Kindersley.

Chicago Style (17th ed.) Citation

Gifford, Clive, Susan Kennedy, and P. Parker. Science Year by Year. London: Dorling Kindersley, 2017.

MLA (9th ed.) Citation

Gifford, Clive, et al. Science Year by Year. Dorling Kindersley, 2017.