Czito, B. G., Ahmed, S., Kalady, M., & Eng, C. (2016). Cancer of the Anal Region. In Colon and Other Gastrointestinal Cancers Cancer Principles and Practice of Oncology 10th Edition (pp. 746–761).

Czito, B. G., S. Ahmed, M. Kalady, and C. Eng. “Cancer of the Anal Region.” In Colon and Other Gastrointestinal Cancers Cancer Principles and Practice of Oncology 10th Edition, 746–61, 2016.

Czito BG, Ahmed S, Kalady M, Eng C. Cancer of the Anal Region. In: Colon and Other Gastrointestinal Cancers Cancer Principles and Practice of Oncology 10th Edition. 2016. p. 746–61.

Czito, B. G., et al. “Cancer of the Anal Region.” Colon and Other Gastrointestinal Cancers Cancer Principles and Practice of Oncology 10th Edition, 2016, pp. 746–61.

Czito BG, Ahmed S, Kalady M, Eng C. Cancer of the Anal Region. Colon and Other Gastrointestinal Cancers Cancer Principles and Practice of Oncology 10th Edition. 2016. p. 746–761.