Cita APA (7th ed.)

SpringerLink (Online service), Metzger, P., & Schiessel, R. (2012). Intersphincteric resection for low rectal tumors. Springer Vienna.

Cita Chicago (17th ed.)

SpringerLink (Online service), Peter Metzger, i Rudolf Schiessel. Intersphincteric Resection for Low Rectal Tumors. Vienna: Springer Vienna, 2012.

Cita MLA (8th ed.)

SpringerLink (Online service), et al. Intersphincteric Resection for Low Rectal Tumors. Springer Vienna, 2012.