APA način citiranja

Penn, I., Halgrimson, C. G., & Starzl, T. E. (1971). De Novo Malignant Tumors in Organ Transplant Recipients.

Čikaški stil citiranja

Penn, I., C. G. Halgrimson, i T. E. Starzl. De Novo Malignant Tumors in Organ Transplant Recipients. 1971.

MLA način citiranja

Penn, I., C. G. Halgrimson, i T. E. Starzl. De Novo Malignant Tumors in Organ Transplant Recipients. 1971.