MLA

Ridley, Anne, et al. Smad Signal Transduction. Springer Netherlands, 2006.

APA

Ridley, A., Dijke, P. ten, Frampton, J., & Heldin, C. (2006). Smad Signal Transduction. Springer Netherlands.

Chicago

Ridley, Anne, Peter ten Dijke, Jon Frampton, and Carl-Henrik Heldin. Smad Signal Transduction. : Springer Netherlands, 2006.