MLA

Nagaratnam, Nages; Nagaratnam, Kujan; Cheuk, Gary, Gary Cheuk, and Kujan Nagaratnam. Diseases In the Elderly. Springer International Publishing, 2016.

APA

Nagaratnam, G., Cheuk, G., & Nagaratnam, K. (2016). Diseases in the Elderly. Springer International Publishing.

Chicago

Nagaratnam, Nages; Nagaratnam, Kujan; Cheuk, Gary, Gary Cheuk, and Kujan Nagaratnam. Diseases In the Elderly. : Springer International Publishing, 2016.