Cita APA (7th ed.)

SpringerLink (Online service), Trump, D. L., & Johnson, C. S. (2011). Vitamin D and cancer. Springer.

Cita Chicago (17th ed.)

SpringerLink (Online service), Donald L. Trump, i Candace S. Johnson. Vitamin D and Cancer. New York, N.Y: Springer, 2011.

Cita MLA (9th ed.)

SpringerLink (Online service), et al. Vitamin D and Cancer. Springer, 2011.