APA način citiranja

Nikolopoulos, I., & Thakur, K. (2009). Urgent Cholecystectomy for Acute Cholecystitis. The Royal College of Surgeons of England.

Čikaški stil citiranja

Nikolopoulos, Ioannis, i Kislaya Thakur. Urgent Cholecystectomy for Acute Cholecystitis. The Royal College of Surgeons of England, 2009.

MLA način citiranja

Nikolopoulos, Ioannis, i Kislaya Thakur. Urgent Cholecystectomy for Acute Cholecystitis. The Royal College of Surgeons of England, 2009.

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