1. Barker, A.V. 1997. Composition and uses of compost, p.140-162. In: J.E. Rechcigl and H.E. MacKinnnon (eds.). Agricultural Uses of By-products and Wastes. American Chemical Society, Washington, D.C. ACS Symposium Series 668.
2. Bildingmaier, I.W. 1993. The history of the development of compost standards in Germany, p.536-550. In: H.A.J. Hoitink and H.M. Keener (eds.). Science and Engineering of Composting: Design, Microbiological and Utilization Aspects. Renaissance Publications, Worthington, Ohio.
3. Volatile Organic Acids In Compost: Production and Odorant Aspects
4. California Compost Quality Council (CCQC). 1999. CCQC Registered Compost. [Online]. Available at http://www.crra.com/ccqc/. Verified 15, 1999. California Compost Quality Council, San Francisco, California.