APA stil citiranja

Čala, Z., Velnić, D., Cvitanović, B., Rašić, Ž., & Perko, Z. (1996). Laparoscopic cholecystectomy: Laparoscopic cholecystectomy : results after 1000 procedures. Acta medica Croatica.

Chicago stil citiranja

Čala, Zoran, Davorin Velnić, Branimir Cvitanović, Žarko Rašić, and Zdravko Perko. "Laparoscopic cholecystectomy: Laparoscopic cholecystectomy : results after 1000 procedures." 1996.

MLA stil citiranja

Čala, Zoran, et al. "Laparoscopic cholecystectomy: Laparoscopic cholecystectomy : results after 1000 procedures." 1996.