増井志津代「多様と統一：植民地時代アメリカの宗教」The journal of American and Canadian studies 17, 89-117, 2000-03-31.
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Chapman, p. 383: "...there may have been about 133,000 native inhabitants in what is now the state as a whole, and 70,000 in or near the conquered area. The missions included only the Indians of given localities, though it is true that they were situated on the best lands and in the most populous centres. Even in the vicinity of the missions, there were some unconverted groups, however." See en:Population of Native California.
