Cita APA (7a ed.)

Liu, S. (2011). Grey systems: Theory and applications. Springer Berlin. https://doi.org/10.1007/978-3-642-16158-2

Cita Chicago Style (17a ed.)

Liu, Sifeng. Grey Systems: Theory and Applications. Heidelberg, Germany: Springer Berlin, 2011. https://doi.org/10.1007/978-3-642-16158-2.

Cita MLA (9a ed.)

Liu, Sifeng. Grey Systems: Theory and Applications. Springer Berlin, 2011. https://doi.org/10.1007/978-3-642-16158-2.