APA aipamena

Barrison, I. G., Littlewood, E. R., Primavesi, J., Sharples, A., Gilmore, I. T., & Parkins, R. A. (1981). Screening for occult gastrointestinal bleeding in hospital patients.

Chicago Style aipamena

Barrison, I G., E R. Littlewood, J. Primavesi, A. Sharples, I T. Gilmore, and R A. Parkins. Screening for Occult Gastrointestinal Bleeding in Hospital Patients. 1981.

MLA aipamena

Barrison, I G., et al. Screening for Occult Gastrointestinal Bleeding in Hospital Patients. 1981.