Cita APA (7a ed.)

Johns, T. (1990). With bitter herbs they shall eat it: Chemical ecology and the origins of human diet and medicine. University of Arizona Press.

Cita Chicago Style (17a ed.)

Johns, Timothy. With Bitter Herbs They Shall Eat It: Chemical Ecology and the Origins of Human Diet and Medicine. Tucson: University of Arizona Press, 1990.

Cita MLA (8a ed.)

Johns, Timothy. With Bitter Herbs They Shall Eat It: Chemical Ecology and the Origins of Human Diet and Medicine. University of Arizona Press, 1990.