APA Style

ENGIN, A., ENGIN, A, B. (2015). Tryptophan Metabolism: Implications for Biological Processes, Health and Disease . : Humana Cham.

MLA Style

ENGIN, Atilla., ENGIN, Ayse, Basak. "Tryptophan Metabolism: Implications for Biological Processes, Health and Disease". : Humana Cham, 2015. Text.