MLA

Gerli, Robert, Elena Bartoloni, and Roberto Gerli. Sjögren's Syndrome. Academic Press, 2016.

APA

Gerli, R., Bartoloni, E.Gerli, R. (2016). Sjögren's Syndrome. Academic Press.

Chicago

Gerli, Robert, Elena Bartoloni, and Roberto Gerli. Sjögren's Syndrome. : Academic Press, 2016.