MLA

Costa, Aníbal, António Arêde, and Humberto Varum. Strengthening and Retrofitting of Existing Structures. Springer Singapore, 2018.

APA

Costa, A., Arêde, A., & Varum, H. (2018). Strengthening and Retrofitting of Existing Structures. Springer Singapore.

Chicago

Costa, Aníbal, António Arêde, and Humberto Varum. Strengthening and Retrofitting of Existing Structures. : Springer Singapore, 2018.