APA (7th ed.) Citation

DP, A. (1998). Screening for prostate cancer. Why can't the clock be turned back? BMJ (Clinical research ed.), 316(7148), 1904.

Chicago Style (17th ed.) Citation

DP, Addy. "Screening for Prostate Cancer. Why Can't the Clock Be Turned Back?" BMJ (Clinical Research Ed.) 316, no. 7148 (1998): 1904.

MLA (9th ed.) Citation

DP, Addy. "Screening for Prostate Cancer. Why Can't the Clock Be Turned Back?" BMJ (Clinical Research Ed.), vol. 316, no. 7148, 1998, p. 1904.