APA (7th ed.) Citation

Hall, A. J., & Russell, D. J. (2017). Gray Seal: Halichoerus grypus. Elsevier Inc.

Chicago Style (17th ed.) Citation

Hall, Ailsa J., and Debbie J.F Russell. Gray Seal: Halichoerus Grypus. Elsevier Inc, 2017.

MLA (9th ed.) Citation

Hall, Ailsa J., and Debbie J.F Russell. Gray Seal: Halichoerus Grypus. Elsevier Inc, 2017.

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