Zeller, M., T. Riordan, H. Zaleski, D. Herzfeld and K. Orvis. 2002. Edible Antibiotics in Food Crops. In: Life Science Ethics. G. L. Comstock, Ed. Iowa State Press. pp. 271-274.
Zeller, M., T. Riordan, H. Zaleski, D. Herzfeld and K. Orvis. 2010. Edible Antibiotics in Food Crops. In: Life Science Ethics (Second Edition). G. L. Comstock, Ed. Iowa State Press. pp. 271-274.
Zaleski, H.M. 2013. Agricultural Extension in Transition. In: Agricultural Markets in a Transitioning Economy: An Albanian Case Study. C. Chan-Halbrendt, J. Fantle-Lepczyk, Eds. CABI. pp. 35-51.