APA stil citiranja

Penzar, I., & Penzar, B. (1991). Hourly values of solar irradiation in clear skies: Hourly values of solar irradiation in clear skies. Geofizika (Zagreb).

Chicago stil citiranja

Penzar, Ivan, and Branka Penzar. "Hourly values of solar irradiation in clear skies: Hourly values of solar irradiation in clear skies." 1991.

MLA stil citiranja

Penzar, Ivan, and Branka Penzar. "Hourly values of solar irradiation in clear skies: Hourly values of solar irradiation in clear skies." 1991.