APA (7th ed.) Citation

Hook, I., McMahon, R., Shaver, P., & Snellen, I. (2002). Discovery of radio-loud quasars with redshifts above 4 from the PMN sample.

Chicago Style (17th ed.) Citation

Hook, I., R. McMahon, P. Shaver, and I. Snellen. Discovery of Radio-loud Quasars with Redshifts Above 4 from the PMN Sample. 2002.

MLA (9th ed.) Citation

Hook, I., et al. Discovery of Radio-loud Quasars with Redshifts Above 4 from the PMN Sample. 2002.