MLA

Li, Mingshu, et al. Unifying the Software Process Spectrum. Springer Berlin / Heidelberg, 2006.

APA

Li, M., Boehm, B., Kanade, T., & Osterweil, L. J. (2006). Unifying the Software Process Spectrum. Springer Berlin / Heidelberg.

Chicago

Li, Mingshu, Barry Boehm, Takeo Kanade, and Leon J Osterweil. Unifying the Software Process Spectrum. : Springer Berlin / Heidelberg, 2006.