APA (7th ed.) Citation

Johnston, R. G., Garcia, A. R., & Martinez, D. D. (2001). Were ancient seals secure?

Chicago Style (17th ed.) Citation

Johnston, Roger G., Anthony R.E Garcia, and Debbie D. Martinez. Were Ancient Seals Secure? 2001.

MLA (8th ed.) Citation

Johnston, Roger G., et al. Were Ancient Seals Secure? 2001.