Haurongo: Davy, Albert Ernest
He whakaaturanga anō
Rārangi pukapuka
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Farland, B. Coates’ tale. Wellington, 1995
Gaudin, J. H. ‘The Coates government, 1925–1928’. MA thesis, Auckland, 1971
Habershon, R. G. ‘A study in politics, 1928–31’. MA thesis, Auckland, 1958