APA (7th ed.) Citation

Friedl, W., Schlag, P. M., & Herfarth, C. (1989). Surgical strategy in cases of precancerous and pre-invasive breast cancer. Breast cancer.

Chicago Style (17th ed.) Citation

Friedl, Wilhelm, Peter M. Schlag, and Christian Herfarth. "Surgical Strategy in Cases of Precancerous and Pre-invasive Breast Cancer." Breast Cancer 1989.

MLA (9th ed.) Citation

Friedl, Wilhelm, et al. "Surgical Strategy in Cases of Precancerous and Pre-invasive Breast Cancer." Breast Cancer, 1989.