Mike Hollywood (2003):
Papa Mike's Cook Islands Handbook,
paperback, 174 pp, iUniverse, September 2003, ISBN: 0595294006.
amazon.com
Christian Juberthie (2001):
Iles Cook (Cook Islands),
Encylopaedia Biospeologica Tome III, pp 2183-2186.
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B. L. Wood (1967):
Geology of the Cook Islands,
New Zealand Journal of Geology and Geophysics, 10(6):1429-1445 · December 1967, DOI: 10.1080/00288306.1967.10423227