Simon, J.E., A.F. Chadwick and L.E. Craker. 1984. Herbs: An Indexed Bibliography. 1971–1980.
Preliminary Agronomic Evaluation of New Crops for North Dakota—Marisol T. Berti and A.A. Schneiter
New Crops for Canadian Agriculture—Ernest Small
Neglected Crops: 1492 from a Different Perspective—J.E. Hernándo Bermejo and J. León (eds.)
Food and Feed Crops of the United States—Magness, J.R., G.M. Markle, C.C. Compton. 1971.