APA način citiranja

Richards, J., Perry, J., Mcmaster, A., Freeman, R., & Gould, F. (1989). Tolerance to penicillin in streptococci of viridans group.

Čikaški stil citiranja

Richards, J., J. Perry, A. Mcmaster, R. Freeman, i FK Gould. Tolerance to Penicillin in Streptococci of Viridans Group. 1989.

MLA način citiranja

Richards, J., et al. Tolerance to Penicillin in Streptococci of Viridans Group. 1989.