Canadian General Standards Board. “Organic Production Systems General Principles and Management Standards.” CAN/CGSB-32.310-2006.
Available on the Canadian General Standards Board website, www.tpsgc-pwgsc.gc.ca/ongc-cgsb
Canadian General Standards Board. “Organic Production Systems: Permitted Substances List.” CAN/CGSB-32.311-2006.
Available on the Canadian General Standards Board website, www.tpsgc-pwgsc.gc.ca/ongc-cgsb