APA način citiranja

Sharif, K. W., & Casey, T. A. (1991). Penetrating keratoplasty for keratoconus: Complications and long-term success.

Čikaški stil citiranja

Sharif, K W., i T A. Casey. Penetrating Keratoplasty for Keratoconus: Complications and Long-term Success. 1991.

MLA način citiranja

Sharif, K W., i T A. Casey. Penetrating Keratoplasty for Keratoconus: Complications and Long-term Success. 1991.