1. Houben H, Guillaud H (1994) Earth construction, a comprehensive Guide. Intermediate Technology Publications, London.
2. Mattone R (2003) Earth construction between tradition and innovation only available in Italian. Costruire in Laterizio 92(2): 70–78.
3. Walker P (2000) Review and experimental comparison of erosion tests for earth blocks. In: Terra 2000, Proceedings of the 8th international conference on the study and conservation of earthen architecture, ICOMOS, Torquay, UK, pp. 176–181.
4. Standards New Zealand, NZS 4297 (1999) The engineering design of earth walled buildings (specific design).
5. Standards New Zealand, NZS 4298 (1999) Material and workmanship for earth buildings.