MLA

Liacouras, Chris A, and Jonathan E Markowitz. Eosinophilic Esophagitis. Humana Press, 2012.

APA

Liacouras, C. A, & Markowitz, J. E. (2012). Eosinophilic Esophagitis. Humana Press.

Chicago

Liacouras, Chris A., and Jonathan E Markowitz. Eosinophilic Esophagitis. : Humana Press, 2012.