Oliver, Paul; Hess, Janet B. (23 February 2012). "African architecture". Encyclopædia Britannica. Retrieved 13 January 2017.
buildingconservation.com
Bouwens, Dirk. "Earth Buildings and Their Repair". buildingconservation.com. Cathedral Publications Ltd. Retrieved 13 January 2017. [reproduced from The Building Conservation Directory, 1997]
Dozens of cob cottages are listed on the Register of the New Zealand Historic Places Trust, e.g. "Ferrymead Cob Cottage". Rarangi Taonga: the Register of Historic Places, Historic Areas, Wahi Tapu and Wahi Tapu Areas. New Zealand Historic Places Trust Pouhere Taonga. Retrieved 21 August 2013.
historic.org.nz
Dozens of cob cottages are listed on the Register of the New Zealand Historic Places Trust, e.g. "Ferrymead Cob Cottage". Rarangi Taonga: the Register of Historic Places, Historic Areas, Wahi Tapu and Wahi Tapu Areas. New Zealand Historic Places Trust Pouhere Taonga. Retrieved 21 August 2013.
